Choi Go-Bong (Yang Dong-Geun) works in the field of artificial intelligence. His wife died 7 years ago after giving birth to their son Choi Yool. Choi Go-Bong then developed a borg mom (Park Han-Byul) using AI and robotics. Choi Yool enters a prestigious kindergarten and the borg mom meets the other mothers there. The mothers group is full of vanity and pretentiousness.