A woman's past as a convict follows her everywhere and because of this she doesn't open up to others. But then she strikes up a friendship with a broken child who has suffered from domestic violence and decides to save the girl from the cruel world. A man who holds feelings for the woman, tries to protect her in his own way.

Dong-hyun is a high school student. One day, he falls from the rooftop and bumps into Pan-soo who is a passerby. Pan-soo is a member of a criminal organization. When the two men wake up in the hospital, they discover that they have switched bodies.

'Geon-woo', brutally trampled by Daejinbuk High's best 'Sang-goo', vows revenge as he practices martial arts. After hearing about 'Geon-woo's comeback, 'Sang-goo' immediately starts to threaten and ask for bribes. To stop 'Sang-goo', they fight head-to-head. To determine who is the real 'best', the bloody fight begins!

Miss Sin (Min Song-ah), Miss Go (Han Gyoo-ri), Miss Choi (Yoo Seon-yeong) and Miss Lee (Tae Woo) are women who used to be hot in Kangnam, Seoul. They are sick of the prostitution world and leave for their hometwon in Jinan. They open a coffee shop called "Miss Call" and swoon all the men in the area. People start coming in from afar to see them after hearing about them on the Internet. But one day, a madame they used to work for visits their coffee shop...