电影《人鱼之恋》讲述了姜南从小跟随爷爷在乡下水库边长大的故事。在一次钓鱼时，他偶然救下了落水的小学女教师李曼。然而，李曼的家人误以为肇事者是姜南，对他产生了误会，并对他展开了猛烈的指责。而在全国钓鱼比赛中，姜南获得了“钓神”的称号，引起了广泛的关注，也让李曼对他产生了更多的好奇与敬意。在这个过程中，两人之间产生了一段深刻的感情，终于决定在水中绽放爱情之花

姜南是一个平凡而善良的年轻人。在乡村的水库边，他过着简朴的生活，乐于助人。他的爷爷教会了他钓鱼的技巧，也传授给他许多关于生活和人情世故的智慧。在一次意外中，他救下了落水的李曼，这个偶然的相遇改变了他们的命运。

李曼是一名小学女教师，热爱生活和教育事业。她在姜南的勇敢救援下，渐渐对他产生了好感。然而，由于误会的缘故，她的家人对姜南产生了误解，认为他是肇事者。虽然事后误会解除，但这一切已经让姜南陷入尴尬和不安。

The movie "Love of the Mermaid" tells the story of Jiang Nan growing up with his grandfather by the reservoir in the countryside. While fishing, he accidentally rescued Li Man, a primary school female teacher who fell into the water. However, Li Man's family mistook Jiang Nan for the perpetrator, misunderstood him, and fiercely accused him. In the national fishing competition, Jiang Nan won the title of "God of Fishing", which aroused widespread attention and made Li Man more curious and respectful of him. In the process, a deep feeling developed between the two, and finally decided to bloom the flower of love in the water

Jiang Nan is an ordinary and kind young man. By the reservoir in the countryside, he lived a simple life and was helpful. His grandfather taught him the tricks of fishing, but also gave him a lot of wisdom about life and the world. In an accident, he rescued Li Man who fell into the water. This chance meeting changed their fate.

Li Man is a female primary school teacher who loves life and education. Under Jiang Nan's brave rescue, she gradually developed a good impression of him. However, due to a misunderstanding, her family misunderstood Jiang Nan and believed that he was the perpetrator. Although the misunderstanding was resolved afterwards, all this has made Jiang Nan feel awkward and uneasy.