Kyaa Kool Hai Hum - Movie Trailer Rahul (Tusshar Kapoor) is sincere and hardworking whilst Karan (Ritesh Deshmukh) is just the opposite. Both are best friends & cool wannabes. When the city is rocked with a series of rape & killings, the police are in search of this dreaded Serial Killer, and Rahul becomes the prime suspect, yet being innocent. Things take a funny turn when the job of nabbing Rahul is entrusted to a violent lady Inspector called Urmila Martodkar (Isha Koppikar) who enters Rahul's life on a pretext, and tries to seduce him into showing his true nature. Rahul falls in love with her and she loves him back, not remembering she is on an police force mission. By this time, Karan falls in love with his boss's ex Kiran. After a roller coaster ride of mistaken identities & comedy of errors, the film reaches its crescendo when the police are on the verge of arresting Rahul as the rapist and Karan is about to wed Kiran at the temple, not knowing that she is a transvestite.