For years the Garde have fought the Mogadorians in secret. Now all of that has changed. The invasion has begun.
John is on the front lines of the fight in New York City. And just as the odds seem stacked against him, his best friend, a human, inexplicably develops a Legacy—and Sam may not be the only one. While the pair try to track down Five and Nine amidst the chaos, they encounter another teen who can wield abilities that were once only meant for the Garde. Whether she is a friend or a foe, however, is yet to be seen.
Meanwhile, Six, Marina, and Adam are trapped in Mexico. They fought their way into the Sanctuary and were able to awaken the power hidden within, but their preceding battle has left them without any way to reach the others. The Mogs are returning in full-force and it will take a miracle to escape. The Garde are stretched thin, fighting this war on many fronts. The only chance they have is to take out the Mogadorian leader once and for all—but his fate is now irrevocably tied with Ella’s. They can’t destroy one without the other. But if the Garde can’t find another way to stop the Mogs, humanity will suffer the same fate as the Loric: annihilation.
THEY are not hiding anymore.
THEY have begun their invasion.
THEY will take your planet by force.
THEY believe they are unstoppable.
WE can defeat them.
WE have unleashed an ancient power.
WE have turned the tide because
WE are no longer alone in this fight.
THIS IS THE BEGINNING OF THE END.
When we left off, this was how things were (not necessarily in order):
- Sam seems to have just developed Telekinesis.
- Marina, Adam, and Six woke up by the Loric Entity that temporarily resurrected Eight for a few minutes, but he died again.
- It appears as if Earth is the new Lorien as a result of waking up the spirit of Lorien -- this is why Sam, a human, has developed a Legacy
- Because of that, we may potentially expect more humans to gain Legacies
- Setrákus Ra cast a charm on Ella so that any damage done to him would happen to her as well , except for damage done by her to him.
- Adamus killed his father.
- Five is not on the Mogadorian side. He had stolen the Xitharis stone and used it to try and help Ella escape.
- The pairings now stand: Four and Sarah, Sam and Six, Adam still missing One, and Marina still wanting Eight back.
- The spirit of Lorien thing is apparently spreading through Earth, giving humans powers or something.
- Sarah and Mark met up and Mark told Sarah what he found out.
- GUARD is Lexa. She is currently with Mark and Sarah and is fixing a spaceship.
- Setrákus Ra's staff, the Eye of Thaloc, has been destroyed by Nine meaning that Setrákus Ra is no longer able to morph/shapeshift.
- We don`t know who Pittacus Lore is either.
- Ella and Setrákus Ra both have the Legacy Cancellation Legacy, Dreynen.
- Everyone important who was alive at the end of The Fall of Five is still alive.
- John, Nine, Five and Sam are all in New York. Nine and Five are currently fighting.
- Ella is Setrákus Ra`s granddaughter. Setrákus Ra has taken Ella on his ship.
- Marina, Adam and Six are still at the Loric Sanctuary.
- And it ends in a cliff hanger.
The prologue is narrated in third person by Daniela Morales. She is a fifteen year-old Human girl living in Harlem. She is watching the news with her fifty-seven year-old stepfather, Benny. John Smith's fight against Setrákus Ra is being televised. The Mogadorians arrive inside her apartment and kill Benny. As she escapes down the fire escape, she feels an electric shock pass through her body, but assumes it is from their cannon fire. Daniela sees Mogadorians keeping count of their human captives. They attempt to capture her too, but she uses telekinesis to stop them. She has no idea how she developed the powers, but vows to use them against the aliens.
Sam Goode, John, and a group of survivors wander through a ruined New York City. It has been a few hours since the events of The Revenge of Seven. John acknowledges the wreckage of fighter jets that were shot down as they pass by. Because he has been overusing his Legacies of Lumen and Recupero, John is physically and mentally drained. Sam and John send the survivors to the surviving bridges to rendezvous with the government. The two Garde hide in a destroyed apartment, where Sam uses his telekinesis to make a sandwich. He asks how it is even possible to develop Legacies, considering he is human. John believes that whatever Number Six, Marina, and Adamus Sutekh achieved at the Sanctuary has affected Sam. Later, they see a TV news broadcast of two very powerful beings attacking one another, wiping out Mogadorians in the process. They know immediately that it is Number Five and Number Nine and go to track them down in Union Square.
In Calakmul, Six, Marina, and Adam exit the Sanctuary. Six contemplates on how she expected the world to be changed when they arose from the temple. Adam asks what their next move is, but Six says she hoped that the Loric Entity would answer, as they spoke to it before after it possessed Number Eight's body. The three Garde realize that the domed energy field surrounding the Sanctuary is no longer there, which Marina believes is due to its energy being diverted somewhere else; she is more faithful in Lorien having exited the Sanctuary. Six and Adam want to return to civilization in order to find out what the Entity has done. However, they find that Dust has been paralyzed and cannot be healed and that the conduit generator for their Skimmer is missing. The culprit is Phiri Dun-Ra, whom Six left alive, now lurking in the jungle. The Garde decide to hunt her down in order to retrieve their tech.
John and Sam make their way to Union Square, which has been abandoned in the destruction. While there, the two boys come across a squadron of Mogadorians that appears to be spooked, focusing their weapons at a bank. They kill the Mogs and John uses his Lumen to see whoever is inside. Instead of finding Five or Nine, they discover Daniela. At first John believes that she was holed up inside with one of the Garde, until realizing that she herself has Legacies. Finally able to speak with other Garde, Daniela asks why John "picked" her to be enhanced by Legacies. He has no idea, and believes that she can help them win the war. However, he is surprised by her unwillingness to help them fight because of her lack of knowledge about the Mogadorians. Before either Sam or John can explain, the Anubis flies overhead and begins to destroy the skyline.
At the Sanctuary, Adam plans the capture of Phiri Dun-Ra. While in motion, Six asks who Adam was referring to aboard the Skimmer earlier, in The Revenge of Seven, when he said she reminded him of someone. He admits he was referring to Number One. When she accuses him of stealing One's Legacy and being sent on a mission to "stalk" her, Adam tells her that he had a deep, psychological connection to One, which was why he is okay with being close to another Garde physically. After Marina captures Phiri, an impressed Adam tortures the Mog for information on the conduits. She unintentionally reveals their location inside a bag tucked in a log. Adam opens the bag, but it turns out to be a bomb, destroying the conduits and sending shrapnel flying everywhere. When Adam attempts to use his Legacy of Terric to absorb the explosion, he is hit in the torso by the blast at close range.
Marina desperately attempts to heal him, but portions of Adam's torso almost disintegrate, despite him being Trueborn. She finally completes the process, and then heals Six's impaled leg. Adam expresses his desire to kill Phiri now that they are stranded. To wait out their decision, Adam hacks into the Mogadorians' global communications' systems so Six can hear about what is happening around the world. Adam translates that the Mogs are progressing in the invasion, which began while they were inside the Sanctuary. He tells her that the Garde-assisted resistance in New York has failed, and that they have taken the city.
In New York, the Garde escape into a flooded subway station, where they used their combined telekinesis to keep the ceiling from collapsing. John passes out from overexertion of his Legacies. Ella induces him into a telepathic dream. He watches in horror the augmentation procedure given to her after she was brought back aboard the Anubis. Ella, outside of her physical body, shows Setrákus Ra dropping the pendants into a Vatborn egg. She tells John about her Legacy of Precognition, enabling her to predict the future's infinite outcomes. She explains that her vision in Washington DC, from The Fall of Five, is now nonexistent. However, she does see herself dying in the outcome where they win. Ella warns John that the Anubis is headed to Calakmul, and tells him to warn the others. He wakes up after six hours. greeted by the United States military. A soldier tells him, "Agent Walker would like a word."
The soldiers take them to a safe zone outside of the city, where Daniela departs to search for her mother among the survivors. Walker briefs John about the twenty-five warships each over their own major city, the tens of thousands of casualties in Beijing when they attempted to break through enemy shields, and the cities where it appears that "the Mogs are taking it easy on them." Setrákus Ra is falsely claiming the Loric as "alien terrorists" that are the cause for the Mogs to fire on the human cities. He also asks that within forty-eight hours, the Garde must be turned in along with humans who have begun displaying signs of Legacies as well. John does not tell Walker whether or not this is true. At first he believes that she is trying to capture John and Sam, but Walker reassures John that she, and currently the United States, are on his side. He watches a promotional video Sarah made, whom later calls him and tells John about GUARD.
Back in Mexico, Adam is attempting to fix the Skimmer. However, he is not an engineer, so his progress is trial and error. Phiri tries to turn Six and Adam on each other by claiming Adam should have been able to fix the Skimmer by now, and that he is too much of a coward to face the battles to come. Adam gags her and contemplates killing her before going back to his workbench. Marina fears that they all may become cold and merciless if the war intensifies. Six manages to call Sam, and is happy to hear that he has received Legacies. However, their reunion is cut short due to the Anubis closing in on the Sanctuary. Adam explains to John how to remove the cloaking devices from the Skimmers and the warships.
Marina wants to stay behind to protect the Sanctuary while Adam wants to leave to be safe from the Anubis. They argue, and he asks which one will kill Ella in order to break the Charm cast by Setrákus Ra. When Adam mocks Marina's faith in the Entity, she shoots an icicle at him and calls him a monster. He apologizes to Six, who supports the option of running into the jungle. Six and Adam plan to trick Setrákus Ra and steal the Anubis, saving Ella in the process. They begin rigging C-4 to the Skimmers in front of the temple and place cannon turrets in the forest. Adam and Marina make amends, and they use their Legacies to block access to the Sanctuary's staircase by digging a massive pit. However, they are interrupted by a spaceship speeding toward them.