Song is told to go undercover as a hospital patient in order to secure evidence leading to his arrest.

One day he ran into an old school friend, Song Man-su, by chance and they spent the next few weeks partying every night, to his wife's chagrin.

Soon Man-su approached him at his place of work, asking if he could use one of the rooms to teach ballroom dance, openly admitting that he is a gigolo.

Initially, Park refused, not wanting to be a part of that world, but eventually he agreed to take a single lesson from Man-su.

That night, Man-su met Park, saying that he would be going to prison for a while, revealing that he doesn't think of dance as art, just as a way of seducing women.

Since studios were scarce, Park left his home, wife, and child in a quest to learn how to dance properly.

His teachers included a geriatric old man who could barely move unless he was dancing Jive, an alcoholic lighthouse keeper who threw himself into the ocean after he finished teaching Park the waltz, a quickstepping rancher, a steelyard worker who danced the cha-cha-cha, a monk who could paso doble, and a construction worker who taught him the tango.

Song relays this part of the story to her superior, who is struck by how callous Park must be to abandon his family for five years.

Following this, Park went through a long string of dancing relationships, each ending similarly, with him receiving an envelope of money.

Shortly after his divorce, Park met a woman named Ji-yeon at the cabaret bar and they began dancing rumba together.

As they are on the verge of consummating their relationship, Ji-yeon's brother walked into the room and beats Park so viciously that he ends up in the hospital Song would go undercover in.

She publicly denies knowing Park, though later she coldly acknowledges him, telling him to stop acting like a kid.

Park claims that he no longer dances, but Song reignites his passion with an energetic jive and romantic waltz.