Han Xiaorui is reborn from the doomsday back to the 1980s, becoming a fishing village woman whose husband cheated and mother-in-law bullied, raising two autistic daughters alone. Relying on the survival instincts honed over ten years of doomsday and the mysterious water-type supernatural ability, she decisively divorces, takes back the fishing boat and family property, and starts a counterattack life. She accurately fishes, opens a shop to start a business, fights ruffians and dishonest merchants with wit, unites fishermen to establish a mutual aid group, and leads everyone to common prosperity. In the process of going out to sea again and again, she accidentally gets involved in a national security incident, assists the special task force in solving an overseas spy case, and rescues the comrade's younger sister who has been imprisoned for five years.