Quando um laboratório gerido pelo governo acidentalmente solta um vírus mortal, a população do mundo é dizimada. Os sobreviventes começam a sonhar com duas figuras: uma velha mística, ou um homem premundo e assustador.
Um aspirante a autor de policiais muda-se para um prédio cheio de vizinhos suspeitos e de desagradável inspiração.
A man has the intelligence of a 7-year-old due to an accident. Han Yoo Jung is a woman with a bright and positive personality. She aspired to become an announcer, but her poor family background made her give up on her dream. She now works hard to support her family. She also lives in atonement for her fraternal twin sister's wrongdoings.
Shiratori Sakuto is 28, but has the intelligence of a 6-year-old boy. He works for Dream Flower Service, a flower distribution centre which provides employment for problem youth. One day, he and a colleague, Yanagawa Ryuichi, delivers a rose bouquet to the apartment building where Mochizuki Haruka lives. Because Haruka does not know that the deliveryman is mentally challenged, she is shocked by his response and tries to call the police. Haruka works for a brain physiology research centre where Professor Hachisuka Daigo has been studying the improvement of mental performance. He has succeeded in lab experiments on a white mouse called Algernon. Sakuto is transformed into a genius through surgery. But Algernon's new intelligence begins to fade, and he dies. Sakuto realises that his genius, too, is destined to leave him.
Based on the manga "Daisuki!! Yuzu no Kosodate Nikki (I Love You! Yuzu's Parenting Diary)" by Mizuho Aimoto, this Japanese TV drama focuses on a woman named Yuzu Fukuhara, who, despite her adult age, has a condition that affects her mental age. After her boyfriend dies saving a child from being hit by a vehicle, Yuzu finds out that she is pregnant with his child. Despite her condition, she shows determination to be a mother and eventually has a daughter named Himawari. The show focuses on Yuzu and her family as Yuzu goes against the odds regarding her mental condition so she can be a good mother to Himawari.
A man (Jonathan) deals with the newfound responsibilities and problems of being a first-time homeowner, with the "help" of his unexpected roommate: a lazy, sarcastic unicorn (Unicorn) who came with the condo and won't leave.