On a new continent, a sudden guerrilla downpour begins, forcing Saber-chan and Boushi-chan to search for shelter while getting drenched. However, the spot they find is already occupied by someone else—an unusually muscular, thick-bodied man whose scent naturally arouses lewd feelings, and who clearly has something substantial between his legs. Curious Saber-chan and intelligent Boushi-chan are thrust into a shocking scenario: experiencing creampie intercourse for the first time with this mysterious stranger.