Lost in Paradise is a 2011 Vietnamese drama film directed by Vũ Ngọc Đãng. Its original title is Rebellious Hot Boy and the Story of Cười, the Prostitute and the Duck (Hot boy nổi loạn và câu chuyện về thằng Cười, cô gái điếm và con vịt), shortened to Rebellious Hot Boy (Hot boy nổi loạn) or simply Hot Boy. The film is set in Ho Chi Minh City and has two separate story lines. The first depicts a love triangle between three men, Khôi, Lam, and Đông, amidst a backdrop of male prostitution. The second concerns a mentally handicapped man, Cười, his friendship with Hạnh, a female prostitute, and his attempts to raise a duckling. The film was a strong critical and commercial success in Vietnam. It has been shown at several international festivals, from which it garnered more mixed reviews. In particular its portrayal of homosexuality has been noted as ground breaking within the context of Vietnamese cinema.