When Sol receives an engagement party invitation from Minji, the girl who stole her first love, she's determined to attend just to prove how great she's doing. But she needs to find a hot boyfriend first, when her dating life's been nonexistent! The only viable candidate she can find is her younger brother's friend, Joohyuk, who has had a major glow-up since his scrawny teenage years. “I'm not a little kid anymore. You'd better watch out.” The tall, sexy Joohyuk seems like trouble…but desperate times call for desperate measures. As long as she can see Minji's jaw drop in shock, Sol is willing to put up with his demands. Little does she know that Joohyuk is actually out to get her for ruining his life in high school! Will Sol be able to make this rocky partnership work in her favor, or will the plan backfire on her?