Once upon a time there was a boy called Shui who lived with his family by the banks of a river. One day Shui strays too far from the bank and cannot swim, so he is swept away downstream. He is now in deep water and danger. Night is coming and Shui longs for his warm home and the evening ritual of Grandpa's bedtime story. Shui's favourite story is “The Water Giants” a tale of how villagers would sing an old folk song to call the Water Giants so they could pay homage and respect. In his heart Shui feels that the song could help him now. What if these Water Giants actually were real? Would they be able to help him? So he starts to sing. Will the water giants come and return Shui home?