A super-charged Mech-X4 races around the world to defeat Traeger's beasts; Ryan must make one of his toughest decisions yet: save his friend or save the world.

With the world falling one city at a time, Ryan and the team retreat to the Thirty's secret farm.

Ryan and the team take on Traeger and a traitor.

Ryan, Spyder and Veracity attempt to sneak into a hospital to get the materials they need for a secret mission.

A traitor on Mech-X4 picks off unsuspecting team members one by one.

After a successful mission, the team finally gets a little chill time in Mech-X until they find a bomb on the X-Deck.

With the team split apart as Grace contemplates leaving Bay City, Traeger makes his move.

Grace informs the brothers that she might relocate the family to Miami.

Ryan meets more of Leo's technopathy test subjects, including his birth mother.

The team must split up to find Ryan in the Arctic while being hunted by an unexpected enemy.

Ryan and the team take MECH-X4 to the Arctic for an epic showdown with Traeger.

Veracity attempts to give MECH-X4 a flight mode for their next mission, but something goes terribly wrong.

The team battles a new mysterious enemy, Traeger, who catches them off guard with an unimaginable power.

Ryan and Mark's fun day with their Dad is interrupted when a fighter drone created by Harris is mysteriously reprogrammed to destroy Ryan.

A new monster creates a city-wide blackout and disables the robot; the team must figure out how to get the robot working before the beast can complete its mysterious mission.

Ryan finally gets a lead on his biological father, Randall, only to find him in danger and must race against time to save him.

Ryan is bombarded by visions of Harper and the threat of the evil tycoon still being alive.

When an ooze-based zombie virus infects the students of East Bay City High, Harris must team up with his science rival Veracity to figure out an antidote to save their school.

Ryan and the guys take MECH-X4 to the depths of the Bay to try and recover the terrifying monster heart.

Ryan's attempt to fit in at his new school is interrupted when the team must stop a superpowered enemy.