After 20 years away, hapless hard-drinking con man Tora-San (Kiyoshi Atsumi) returns home to his beloved half-sister, Sakura (Chieko Baishô), who lives with their aunt Tsune (Chieko Misaki) and uncle Tatsuzo (Shin Morikawa). Tora-San helps the beautiful Sakura attract the attention of Hiroshi (Gin Maeda). As their attraction leads to preparations for marriage, Tora-San becomes closer to Fuyuko (Sachiko Mitsumoto), unaware of her engagement to another man.