Xiaoyu, who was in a coma due to the "mysterious talisman", was taken back to his hometown by his father. Xiaoyu suddenly woke up, behaved strangely, and was involved in a series of mysterious and touching fairy stories. A Ling, a childhood sweetheart, provided help to Yu's father and created an ambiguous spark, but the eccentric A Ling hid things from Yu's father and Xiaoyu, as if she was brewing something. Yu's father slowly discovered Xiaoyu's strangeness, but a new bond was formed. The emotional entanglement between the real and fake Xiaoyu made the trip to his hometown confusing. Who exactly occupied Xiaoyu's body? What did A Ling hide? Where is the real Xiaoyu? As Yu's father gradually cleared the fog, how will he face it...