Fake (2017)

It will be the role of his life. Guen Bae (Lee Hyun Wook) has always had a talent for impersonating celebrities and transforming himself into different characters. But he can never live up to the standards of Guen Ho, his smart, older brother, so he runs away from home and finds success working as a disguise artist. One day when Guen Bae discovers Guen Ho’s dead body, his first instinct is to call the police. But a second thought comes to him that gives his meaningless life a new sense of direction and purpose. He decides to take on his brother’s identity as a police officer and track down his brother’s killer.