Hayato Kasukabe returns to his late grandmother's seaside café in Miura planning to demolish it, only to find five young women — Ami, Ouka, Shiragiku, Akane, and Riho — already living there and claiming his grandmother took them in. Their refusal to leave and desperation to keep Café Familia open convince Hayato to give the failing business one more chance, with all six of them working to revive it together.