Knock Knock Live features Ryan Seacrest in a Los Angeles-based studio, while the KNOCK KNOCK LIVE team travels across the country, to any city at any time, surprising unsuspecting people at their front doors with a chance to win big cash prizes, meet their favorite celebrities and turn their wildest dreams into reality. What if someone knocked on your door and offered you thousands of dollars for naming nine kids who live on your block? Could you do it? A knock at someone else's door and it could be their favorite professional basketball player who challenges them to a game of H-O-R-S-E, with a chance to win courtside seats. KNOCK KNOCK! Who's there? It could be the biggest pop star in the world performing a concert on your front lawn! This series will take an ordinary day and make it unforgettable.