Haruhi Fujioka stumbles across the Host Club and accidentally breaks a vase; unable to pay for the vase Haruhi is recruited as a new Host despite being a girl.

Haruhi has no problems adjusting to her new duties as a Host; Haruhi takes an interest in her newest client; with a formal dance coming up Haruhi needs to learn how to dance.

It's physical exam time at Ouran Academy which could spell trouble for someone who spends her days in disguise; Tamaki launches the Host Club on diversionary tactics; Kyoya has a backup plan.

Tamaki is jealous of the relationship between the twins and Haruhi; a young woman obsessed with dating sims declares herself the Host Club's new manager and her first order of business is to give all of the Hosts a "dark side."

Haruhi divulges her secret for telling Hikaru and Kaoru apart; the rivalry between the twins begins to spiral out of control and is causing a dip in the Club's profits.

An elementary student with aspirations of becoming a Host ventures into Music Room 3.