Watch Sucker for Free: How to Stream the Movie Online at 123Movies. . When Chinese-Australian teenager Lawrence cheats at and fails his high-school exams, destroying his dreams of a medical degree, he's banished to the country for the summer. There, he meets wily old conman the Professor and his cynical daughter Sarah, and learns that even the sneakiest scam can't conjure up love. Is it a true story? That might be another of Leung's tricks.