The Boonboomgers and HIKAKIN are filming a collaboration at a circuit purchased by Taiya Hando when suddenly, a princess from the planet Trickle escapes! The Boonboomgers protect her, who has escaped from the invasion of the Hashiriyan, a group of space ruffians. However, the Hashiriyan threaten to launch a "planet-destroying missile" at Earth if the princess is not handed over...!