A snowy village in ancient times. One day, Yohyo saves an injured heron. Out of gratitude for his kindness, the heron starts to live with Yohyo as his wife, Tsu, and gives him cloth, called Sembaori (cloth of thousand cranes), which is woven from her own feathers. Told by Unzu and Sodo that if he brings the cloth to the town and sells it there, he would be able to earn a huge sum of money, Yohyo urges Tsu to weave more cloth. Tsu becomes disappointed with Yohyo, who is obsessed with money, but she decides to weave more cloth in the belief that she would be able to regain Yohyo's heart if he gets more Sembaori cloth. Yohyo has been asked by Tsu never to look in on her while she is weaving cloth, but unable to restrain himself, he peeps into the room to see Tsu in the form of a heron weaving cloth. On the following day, Tsu, who has become very thin, gives Yohyo the Sembaori cloth, says farewell to him, and flies into the sky.