Kai is a left-behind child living in a remote village, wants to meeting his parents in the city during the summer holidays, but his plan is shattered when he learns that his mother is pregnant with a second child. After an extremely anxious and scorching day, Kai sleepwalks towards the river to play with water. His grandparents, who believe in superstition, use traditional methods to treat his sleepwalking. However, Kai continues to have vivid dreams of fire that trouble him.