After liberating Lucky's home planet, the Kyurangers split into two groups again, looking for the means to break into Planet Southern Cross to confront Don Armage, but Shou is starting to feel left out, as Tsurugi has been a better leader than him.

With the power of the Andromeda, Cassiopeia, Cepheus and Perseus Kyutamas, the Kyurangers break into Planet Southern Cross chasing after Don Armage, where they encounter a mysterious masked assailant.

The Kyurangers have no clue about Don Armage's whereabouts since their last battle, until they hear of planets exploding mysteriously in the Corvus System and set course there, unaware that Tsurugi is keeping a secret from the others.