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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.
The team battles a new mysterious enemy, Traeger, who catches them off guard with an unimaginable power.
Season 2 of Mech-X4 was announced on September 1, 2016.