Hee-jung, a college student, uses up a lot of money on Bitcoin and so she can't pay back her friend, Joo-yeong. Worried, she came to work at a room salon and pays off the money she borrowed. Seeing how Hee-jung is, Joo-yeong tells her she wants to work at the room salon, too. Eventually, they both became aces! Until the vacation ends, they are slowly getting money, their hot services are attracting more and more customers...
Bong-soo receives a love tutor from Hope to escape from Moto-solo. Just a friend, Jeongyeon, starts to look like a woman. Bongsu confesses his anxiety to hope.
Gyeongsu and Eunji are married to their parents because of their business. Eunji is sad and depressed because her husband's love is not married. Meanwhile, Gyeongsu meets Yeongju without a wife and has an affair. Then one day, Eun-ji broke the boiler at home and called an AS engineer. Meet Jung Hwan, who was a lover before marriage. My husband says he sleeps at the hotel until he fixes the boiler, Eun-ji and Jung-hwan think that they are getting hotter...
Hye-won, Hee-jung and Joo-hee are university alumni. Everyone is envious of Hyewon who got married first, Hyewon, who has no marital relationship, is more envious of her unmarried friends. Hee-jeong gives her friend Joo-hee, after being proved by Sekpa Min-woo. Hee-jung has an affair with her boss. Hyewon and Joohee discuss changing husband and lover to try. Joo-hee is flirting with Hye-won's husband. Hye-won is attracting Joo-hee's lover. Couples swapping each other and swapping. They break up, promising to meet again.