Kase Eitaro, a former hikikomori, is invited by his childhood friend Chitose, who he secretly admires, to start working on a costume at an amusement park. As soon as he gets used to his job even though his energy is sucked by the aliens, Eitaro faces off against his rival, Ichinoe, for the role of the main character in the show.? Your struggle until now is...!?