Van Kleiss turns Noah into an EVO! Can Rex cure his best friend in time?

On a mission to recover a set of nuclear reactor cores from a research ship, Rex and Six encounter an advanced civilization of marine E.V.O.s.

Providence Agent Kenwyn Jones and Rex are assigned an undercover mission to investigate an underground E.V.O. party. However, their unique way of getting things done soon causes problems and they must learn to work together.

Rex and Bobo are sent to fix a failing shield around the Bug Jar. Unfortunately, Van Kleiss and the Pack, along with Circe, arrive in order to forge an alliance with the inhabitants of the Bug Jar and their vengeful leader, NoFace.

Rex discovers that Bobo has replaced himself with a robot duplicate.

Six asks for Rex's help to cure his old mentor, who's become an E.V.O.

Rex is kidnapped from Providence by a man who claims to be his older brother, Cesar Salazar.

Rex is sent to South America to stop "The Green Fist", a group who have been stealing E.V.O.s from Providence.

A ghostly cat-like E.V.O. interrupts Rex and Noah's double-date with Claire and Annie at a haunted hotel.

Rombauer and Lansky, two Providence training washouts, form their own amateur E.V.O. hunting business. Rex, dissatisfied with his work at Providence, decides to do some moonlighting with them.

Noah convinces Rex to attend his school, so he can participate in an upcoming ping-pong tournament.

While investigating a nanite-free sandstorm, both Rex and Van Kleiss become trapped underground, with their nanites slowly being destroyed. The two enemies must work together in order to survive.

Caesar takes Rex to visit a family friend back in Mexico where they are met with cold suspicion and a dark secret.

While delivering Chinese food to Providence, Rex is attacked by Breach. She later tells Rex that Van Kleiss has a very important mission for her involving an old friend of Rex's. After she suddenly leaves through a portal to Hong Kong, Rex follows her, mistakenly thinking that Breach is after Circe. Rex eventually discovers that Breach is after his old boss: Quarry.

Doctor Holiday goes to disastrous lengths to get her younger sister, Beverly, cured by a mysterious man named Dr. Brandon Moses, who says that he has found a cure for incurable E.V.O.s. However, there may be more to his "cure" than meets the eye.

A news crew is given an all-access pass to Providence, and Rex goes a little too far in an effort to get more camera time.

While the rest of Providence is off-site for training exercises, Rex is grounded. Noah convinces him to have a party, but can only deliver four hoodlums for guests. When an EVO intruder is found inside the base, it's up to the six of them to stop it.

An effort to restore Rex's memories results in Six losing most of his. Now having reverted to his earlier, less-refined self, Rex has to help Six find his way back from heartless mercenary to the mentor he has come to know.

Van Kleiss has found a way to enhance Breach's powers so she can now open portals in time. To stop this dangerous threat, Rex must attempt to lure her over to the good side.