你将作为一个电影介绍员，写出一段关于《碰瓷者》的故事梗概，你需要写出该电影的主要角色，背景，不要透露过多未来剧情，从而提起读者兴趣。
Young Oksana put Denis in a baby box when he was an infant. Sixteen years later she steals him away from a children’s home, intent on making amends for her neglect. Denis, however, has no idea of the heavy price to be paid for his mother’s favour: the fragile boy has one unusual quality which Oksana has no qualms about exploiting.