Yukio Haruyama is an elementary school student. He has an uncle 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.

Love and marriage are the issues when one bickering couple can't quite split up, but another seemingly happy couple wonders if they really are.