Yeol-Mae and Suk-Hyun were on and off of their relationship five times throughout 12 years.Suk-Hyun made his first decision to break-up with Yeol-Mae in Myoung-Dong Street. After their fifth attempt on their relationship, they decide to end it for good. Three years later, after a couple round of drinks, the two ended up in bed together. From that night, they start their sixth secret relationship. Feeling the complicated emotions throughout the several relationships, they decide to become friends with benefits while they wait to find true love with another mate. However, Na-Hyun and Ji-Hoon show up in front of Suk Hyun and Yeol Mae to complicate things.