The newly trained Yamane Rin had completed her certification and secured a job as a flight attendant for Fuji Airlines. Initially, she had anticipated an enjoyable flight on her first day. Nonetheless, she quickly realized this was not going to be as easy as she thought, as she struggled to manage demanding passengers. During her shift, she encountered the Chief Attendant, Hanazono Hinako, whom she initially believed to be amiable. However, Hanazono Hinako had multiple personalities, and outside of work, she was a fearless individual who always came out on top.