Ji Woon, Jun Ho, and Kyeong Hun are roommates living together in a studio apartment in Seoul. While relying on each other despite the tough conditions, Ji Woon starts sports gambling with their rent and bills after he injures his leg and can't find a job. Jun Ho notices that Ji Woon starts gambling when Ji Woon becomes over-sensitive to the Asian Games football quarter-finals, and this fuels the already existing emotional debate. Roommate realistically portrays the three friends that are common around you in real life and captures our youth which is sometimes dazzling and sometimes challenging.