In an amusement park where eccentric characters converge, Yuuma Hirose stumbles upon a child abduction while donning a mascot suit. Acting swiftly, he rescues the child and is aided by janitor Kazuha Shikiori in apprehending the culprit. As a bond forms between the two employees, Kazuha becomes Yuuma's unexpected roommate. However, the next day reveals a startling transformation in Kazuha, from affable companion to a stern and enigmatic figure. Yuuma delves deeper into Kazuha's enigmatic nature, unraveling the mysteries behind his multiple personas.