Perfect Swapping

Chae-hee and Se-yeon, who depend on each other, start living together like a real mother and daughter. One day, Se-yeon’s boyfriend, Jong-wook, proposes to her. With nothing to her name, Se-yeon begins a secret deal with Jeong-hyeon, a real estate agent and Chae-hee’s boyfriend. Unaware of what’s going on, Jong-wook starts to take an interest in Chae-hee, his fake mother-in-law.