About a couple who wants to show their love to the world below the ocean. The boy sends out a diamond heart necklace out to the ocean where it will go below and show the creatures about their love. But a few years later, the boy has been lost in the Tsunami which occurred on the same area where the boy had sent out his love heart and now the girl thinks the ocean did this because of jealousy and decides to send one out herself and prove to the world below that her love still exists.