Ryoko, a young teacher, grew up in a foster family. After the death of her foster father she returns to her origin family. Rejected by her religious mother and not being reintegrated in her surroundings, she feels abandoned by the world. One day her sister Taeko brings home her fiancé Keiji, with whom Ryoko had a deep love affair years ago. Once again they feel attracted to each other and accept they are doomed. Inspired by Luchino Visconti's SENSO (1954), SUMMER STORM is one of four films NAKAHIRA made in 1956 about social conventions and the inevitable breakout.