Sucker (2015)

After Chinese-Australian teenager Lawrence cheats and fails his high-school exams, his aspirations for a medical degree crumble. He’s sent to the countryside for the summer, where his path crosses with a shrewd old conman known as the Professor and his skeptical daughter, Sarah. Immersed in their world, Lawrence learns that no clever scheme can manufacture genuine affection. As their tales unfold, one might wonder if this narrative itself is another of Lawrence's clever deceits.