While the movie doesn't specifically depict a boy being given to humans, it does revolve around a mermaid princess named Ariel who falls in love with a human prince named Eric.
Here's the breakdown:
* Ariel: A mermaid princess who longs for a life on land and is willing to make a deal with the sea witch Ursula to become human.
* Eric: A human prince who is rescued by Ariel and falls in love with her, unaware that she is a mermaid.
* Ursula: A manipulative sea witch who makes a deal with Ariel, granting her legs in exchange for her voice, with the ultimate goal of stealing Eric's throne.
The movie does not explicitly show a boy being given to humans, but it does involve a mermaid who becomes human and falls in love with a human.