In the early years of the Republic of China, everything went as usual in the beautiful and tranquil Hehua Town. A girl named Hua Daduo decided to commit suicide because she could not bear the pain of life. Just when she was despairing of all hope, Gu Mo and his childhood town came to Hehua Town. Not only did he rescue the heartbroken Hua Daduo, but he also helped many people to untie their knots and achieve true growth by helping others travel back to their childhood. At the same time, Hua Daduo discovered a big secret of Gu Mo...