Yukio Haruyama (Riku Ohnishi) is an elementary school student. He has an uncle (Ryuhei Matsuda) that teaches philosophy part-time at an university. His uncle leeches off his family. The uncle then goes on a blind date and falls in love with beautiful Eri Inaba. She is a fourth generation Japanese living in Hawaii. Sometime later, Eri goes back to Hawaii to take over a coffee farm left behind by her recently deceased grandmother. Yukio and his uncle travel to Hawaii to see Eri..