The Revenge of Seven is a young adult science fiction novel by Pittacus Lore and the fifth book in the Lorien Legacies series.

Ella wakes up in a strange place, she sees Mogadorians and tries to escape using the Great Book as a weapon.

He tries to force her to eat and tells her that he used to be an Elder and that he experimented with altering genetics.

The Mogadorians try to force Ella to read the Great Book by blasting an alarm at her whenever she doesn't.

Ella is disgusted to note that she is betrothed to the treacherous Number Five.

Setrákus Ra trains Ella to use her Legacy Dreynen, using Five as the equivalent of a punching bag.

Five stabs Setrákus Ra and the binding charm makes Ella injured as well.

John, Sam, Sarah, Malcolm, and Adam, as well as a bunch of Chimæra are staying in an abandoned textile factory.

They figure out that the surviving Garde are in Florida, except for one whose dot on the tablet is bouncing everywhere.

They find a website titled They Walk Among Us with information about the Mogadorians, and Sarah goes to meet Mark James.

Adam uses Mogadorian surveillance to see Seven (Marina), Six, and Nine break into the base.

Marina finds Dale, who claims that there is an old NASA base in the swamp with UFOs flying around it.

Nine uses his animal telepathy to tell a beast controlled by the Mogadorians to cause a distraction.

Shortly after Seven, Six, and Nine come to Ashwood Estates, Agent Walker and the FBI arrive.

Their plan is to assassinate the secretary of defense, Bud Sanderson, who was working for the Mogadorians.

They believe that his assassination will help stop Setrákus Ra's invasion plan.

He shows them what he said, that Lorien is not a planet, but an entity, and that it can be awoken in Earth when their Inheritances are put in Calakmul.

They collect much of the Inheritances to "commit to the earth" and also bring Henri's ashes and Eight's body.

When they leave the ship, Phiri Dun-Ra pretends to bargain with him, but hits him on the head.

They dump the contents of the chests, their pendants, and Henri's ashes down it.

Nine claps, wearing a pair of gloves from Marina's chest, and generates a huge noise.

The book ends after the telekinetic blast, and Sam saying, "Holy shit, did I just do that?"

The series' fan base opinions of The Revenge of Seven have been rather positive, with the novel currently holding a 4.3 rating on GoodReads as of 9 February 2015.