To her surprise, Mei discovers that her next-door neighbor Yuta works for a rival pharmaceutical company. To make matters worse, her colleague Kaoru arranges for Mei and Yuta to attend a matchmaking dinner together. On top of that, Mei's mother suddenly drops by to visit and Mei has to scurry to hide the fact that she has a male housekeeper!

Mei's mother returns home early to discover Mei and her housekeeper, Nagisa-san, together. Mei confesses that she takes after her mother in being terrible at housework. To Mei's surprise, her mother tells her that she is confident Mei can do anything if she puts her mind to it, and Mei becomes determined to prove her mother right.

Mei tries to stop Yuta from finding out she lives next door to him but he discovers the truth. Then, when asked if there's a man living with her, she lies and says that Nagisa-san is her father, not wanting Yuta to know she has a live-in housekeeper. Meanwhile, Kikunosuke, a doctor, starts pursuing her. Mei finally agrees to a date provided it's with a group of people. But then who should turn up but Yuta and one of Mei's female colleagues, Kaoru!