When the evil Gavanas Empire invades the 15th Solar System, Hayato Gen joins with Ryu and Balu to fight back!

Hayato, Ryu and Balu are scouted by a local band of rebels, but Ryu has doubts about joining.

Hayato saves a beautiful messenger from Earth, but is unsure what her arrival means.

The spaceship sails for Ahalis to free Kamiki, the resistance leader.

Hayato's attempt to check in at his old school reveals a conspiracy and a trap.

The Emperor Roxeya orders Hayato to be captured; Ryu disguises himself as a Gavan pilot.