After an asteroid crashes onto the planet of Expel, strange things begin to happen. Natural disasters happen with greater frequency and monsters begin to appear. A legend states that a warrior will come to save their planet with a sword of light. Far away, on the planet of Milocinia, the small party from the space ship Calnus, under command of Ronixis J. Kenni, investigates a large black globe that has been the cause of some disturbances. While doing so, Claude C. Kenni, son of Ronixis, is pulled into some type of device and sent to Expel, where he meets Rena Lanford, saving her from being attacked. She mistakes the weapon he uses, a phase pistol, for the sword of light and believes that Claude is the warrior that will save them.
