World swimming champion Zhang Miaomiao accidentally traveled to a flooded ancient world in an extreme diving accident. She relied on her excellent swimming skills, first aid knowledge and rich modern scientific knowledge to survive in desperate situations, and was mistaken for the River Goddess by the surviving victims. Zhang Miaomiao made mistakes and used this identity to unite with the upright military officer Wei Ran to gradually establish order and win people's hearts, and finally embarked on the road from a survivor to a subversive in troubled times.
