The Dekarangers discover a mysterious android girl. Suddenly, this girl slowly develops human emotion, and Sen-chan volunteers to let her grow more human to find out the reason why the Alienizers are after her...

The android girl, Meria, is revealed to be the brain to the large machine monster Gigas! Sen-chan and the other Dekarangers must continue to protect Meria while dealing with an out-of-control Gigas that's destroying the city! Perhaps it's time to show off DekaBase's true colors...