The "slumbering planets" have fallen under an everlasting sleep from the poison of the Tobias Tree. This is the story of Ruby Star Tripper, Serial Number 303 of Planetarium Ghost Travel Inc., who travels to these slumbering planets to record and preserve the remaining culture there. 303, who has retourned from a long vacation, reunites with partner Controller 505.
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303 extends his vacation and sets off on a journey with 505.
