Hong Seol and Yoo Jung attend the same college, but they couldn't be more different. Hong Seol is a poor, unpopular student with no money, while Yoo Jung is rich, well-liked, extremely smart, and popular. Hong Seol just wants to get through her college career quietly, but finds herself getting caught up in whatever Yoo Jung drags her into. Can Hong Seol break away, or will she continue to be the only person who sees Yoo Jung's true self?

Nam Shin is a son from a family who runs a large company. After an unexpected accident, he falls into a coma. His mother Oh Ro-Ra is an authority on brain science and artificial intelligence. She creates an android named Nam Shin III which looks like just like her son Nam Shin. The android pretends to be Nam Shin and he has a bodyguard So-Bong.

In 1997, a mysterious ghost saved humankind and then disappeared. The mysterious ghost appears again 24 years later and helps a serial killer escape. Kim Sae Ha, Jung Sae Byeok and Song Eo Jin pursue the ghost for different reasons.

Woo-jin, a furniture designer who wakes up in a different body every day, falls for Yi-soo, a woman he meets through his work.

Drained from her life in the city, a young cellist moves to a quiet small town, where she encounters an old friend who helps her heal and remake herself.

Seo Mi-rae is worn out by work. Love? It's the last thing on her mind. But a virtual dating service sparks feelings — and maybe a real shot at romance.