The Tatsumi siblings all are called to the same emergency where, during the commotion, they wake up back in their home with a message from their previously absent father.

Matsuri is sent on a mission from her father to deliver a new machine to a volcano expert. However, she is forced to take the bus and the Psyma siblings have a plan to make the volcano erupt.

With their robot low on power, Mondo and Kyouko must finish a new, more powerful robot to combat the Psyma.

Shou gets fed up with Liner Boy in a training simulation and is asked to take him in for a check up. Unbeknownst the the Tatsumi family, the Psyma have infiltrated the facility.