Synopsis:

 Undercover policewoman, Hyuna, begins her mission to search these four rich guys, Kai, D.O., Sehun, Lay. Disguising her to be the maid of the household and encounter in a conflict with the handsome beast Kai. Thinking that Hyuna is destroying Lay’s life, Kai is willing to push Hyuna out in every possible ways, but what will happen when he secretly-madly in love with her and she’s not even paying attention to him, but other guys in the household?...also what will happen when Hyuna’s suspicion suspects toward the guy she fall in love with?...

2nd synopsis:

Rakish, roguish Kai is willing to pretend to attract the new housemaid, Hyuna, just so she’ll get out from his best friend’s life. Doing every seductive move to make her fall in love with him, even though he hates her seductive stares. He tries to possess her, but he sees nothing change instead suspicious, not until she set eyes for another man in the Princeton house…

                Hyuna just wants to laugh at the stupid rake, Kai. She knows his plan, but she doesn’t care, why would she, it’s not like she have feelings for these men, but it’s her job as an undercover police to cripple the new drugs that is increasing day by day. And one of these men in the Princeton house is the producer of the new drug, but which one, Kai? She knows his plan, which she vows to participate, but how will this last when she silently falls for the roguish Kai’s seductive kiss and he’s the one she suspect...