You're not a girly woman, actually you're a tomboy. Your best friend is Cheon Dung, also know as Thunder. You know him since childhood. One day, he decided to introduce you to the friend he made at university : Joon, Mir, Byung Hee and Seung Ho. However, because of your clothes, your hair, and your way of speaking, they felt like talking to a boy. What will happen when Seung Ho will begin to fall for you ? Will your boyish behavior bother him ?