Yes to kids, but no to marriage! An alpha-girl pregnant from a sperm donor unexpectedly meets an idol group member who wants to be a dad!

A successful lawyer Seo Yu-chae who is against marriage, decides to become a single mother and gets artificial insemination operation from a close friend Ju-mi, a fertility doctor. Yu-chae becomes pregnant with twins afterwards, but the sperm donor who should’ve remained anonymous suddenly shows up and insists that he wants to play the role of father. This guy, 6 years older than her and appeals that this is his last chance to be a father because of the sudden azoospermia. This guy turns out to be Gang Yi-hyun who is the leader of Asia’s most popular idol group “Illusion”.

Gang Yi-hyun is the prettiest member and main vocalist of the million-seller idol group “Illusion”. On a random sperm test on a bet, he faces a shocking result that he has azoospermia. Stricken with the fact that he’s infertile in his 20s, Yi-hyun remembers that he donated his sperm when he was younger in order to get some cash.
He wants to become a good father and decides to visit Seo Yu-chae.

Yu-chae is deeply traumatic over her past experiences of her father’s domestic violence and pushes Yi-hyun and all the other men away, but he doesn’t easily step back. Yu-Chae finds Yi-hyun’s story of having donated the sperms just because he wanted to eat grilled meat immature, but he slowly begins to show unexpected kind, warm, and mature aspects.