What happens when 3 girls in the neighbourhood pair the guys and girls, including themselves, together?

Sa Beul, MiYeon, and Nana are three best friends. One day for fun, they pair the guys and girls in their neighbourhood together for fun.

Little did they know what chaos it would cause.

The other neighbours, G:Na, Nicole Jung, and Yuri come out and play on the road at 9.00 AM with the guys : Doojun, Key, Kyuhyun, Mir, and Taeyang.

Their fun comes to an end when the guys and girls find out about their make-up stories...Soon, things are gonna start getting pretty complicated!