The sea, the beach, surfing, beauties in swimsuits... The photographer Michu Asahi (Tomohisa Yamashita) who lives by the sea seems to have a very comfortable life, but he has a knot in his heart that has not been untied for three years. His ex-girlfriend Kasumi (Masami Nagasawa) left without saying goodbye, but Asahi still couldn't forget her; the chef Chiyohara Natsuki (Karina) of a famous restaurant encountered her boyfriend running away at the wedding scene, and came to the beach by chance; the energetic lady Furuyama Hanae (Erika Toda) who had nothing to do all day had been in love with Asahi for ten years, but still couldn't get a response. This group of people gathered at the beach, each with their own thoughts, but the beach ushered in a change this summer. Surrounding the seaside snack shop "Sea House", they spent the most unforgettable summer in healing and being healed, walked out of the shadow of the past, and saw the most beautiful sea and the bluest sky.