Yi Yi starts with a myth, telling the story of Yi Yi, a pearl fairy grass growing on the bank of the Stone River. It was about to wither and the waiter of Shenying used his nectar to water it every day. In the end, he became an immortal and became the Pearl Fairy. Later, when the servant of the God King Ying came down to earth to create an illusory destiny, he also took the Sky-Mending Stone with him. Later, the Pearl Fairy also came down to earth in order to repay her kindness. He planned to use the tears of his life to repay the kindness of Shenying's waiter, so he staged a love affair between Mu Shi and Jin Yu.
