The fourth extended play by South Korean girl group Red Velvet. It was released on February 1, 2017, by SM Entertainment. The album contains six tracks, including its lead single of the same name.

The mini-album was a commercial success, topping the Gaon Album Chart and Billboard's World Albums.

Track list:

1. Rookie

2. Little Little

3. Happily Ever After

4. Talk to Me

5. Body Talk

6. Last Love