Sexy female college students get part-time jobs at a room salon and provide very special services.

Soo-jin and Jeong-hee are university students who start looking for a high paying part time job during vacation. They end up in a room salon and fall for a high down payment. The owner notices how naive they are and tells them they have to go for second rounds if they want to make big money. Meanwhile, the ace host girl, Yoon-jeong, comes back after a hiatus due to being sick. These girls begin an ego battle for getting the most customers.

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...