The heroine Su Tianbao (nickname: Tangtang) travels back to 1962 and becomes a 3-year-old girl in a rural area in Northeast China. She has a "Koi Luck System" (which needs to be triggered by meeting cute conditions). She looks silly and sweet but is actually very wise and foolish. The Su family that adopted her is a declining Orion family, and all the members are "disliked on the surface, but doted on in reality" with contrasting and cute characters.
