Following his reconciliation with Dr. Xeno, Senkuu Ishigami is nearing the fulfillment of his long-standing dream: the lunar space mission is finally in progress. As Dr. Xeno commences development of the rocket's engine, Senkuu's team persists in traversing continents and oceans to locate vital resources and individuals needed to construct the mission's infrastructure and revive the entire human population. At the same time, the mysterious Whyman continues to cast its shadow over Earth from the Moon. Yet, with humanity's combined strength finally uniting, it is merely a matter of time before Senkuu and the others face Whyman and obtain the answers that have evaded humanity for centuries.