After all the tough training by the Defense Force's Third Division, newcomer Reno Ichikawa notices that he has a day off! He is determined to enjoy it to the fullest, but having gotten used to his daily work routine, he cannot recall what to do with this free time. When Reno discovers that the vice-captain of the Third Division, Soushirou Hoshina, has something planned, he decides to follow him with his comrade Iharu Furuhashi to figure out the secret behind his day off. [Written by MAL Rewrite]