Futaro Uesugi is doing his best to tutor the quints and keep them from flunking, and things are finally going smoothly. But suddenly, Nino and Itsuki have a falling out, and both girls run away from home! Meanwhile, Yotsuba prioritizes subbing in as an extra for the track team instead of making sure her grades are on track! As if all that wasn't bad enough, the mysterious girl from Futaro's photo shows up... Will the sisters and Futaro ever have time to study for finals?!