Choi Shang

A young girl who lives with her cruel stepmother and sister, accidentally meets 3 young and rich cousins who live a luxury life in a big mansion and is hired by the boys grandpa to look after their bad behavior.

Kim Tae-hyun is a talented surgeon who adopts the code name Yong-pal to help those in need of medical attention. He rescues Han Yeo-jin, a chaebol heiress, from a medically induced coma, leading to unintended consequences.

Four friends make an oath sworn in blood to commit suicide one night, but next morning only one is found lying dead on school grounds.

Delivery man Dae-Oh is hopelessly in love with the student Ye-Rin. Inspired by Che Guevara's words he disguise himself as a student to make the impossible possible, but things get more revolutionary than he ever anticipated.