 Pressured by his buddies' enthusiasm, Sadao gives in and leaves for Awaji, where he is welcomed by his aristocratic grandmother.The "obaasan" ("granny", as he defiantly calls her) is shocked by her grandson's disarming sincerity, a far cry from the hypocritical manners inherent in any high society member.When Sadao finds out that the promise to join his mother was just a trick to attract him to the island, he devotes all his efforts to finding her himself.