He and she are both ancestors of heaven. Once they were the only ones in each other's world. He promised her that he would give her the whole world, and she promised him that she would give him her most beautiful bloom. However, time will turn the sea into a mulberry field. When he finally put the world in front of her, she no longer needed it, so he disappeared into reincarnation. When everything comes back, she finds him, but will he still give her the whole world and his heart like before?