A tragic accident leaves an ambitious prosecutor with the mind of a child — forcing him and his mother to embark on a journey to heal their relationship.

Young entrepreneurs aspiring to launch virtual dreams into reality compete for success and love in the cutthroat world of Korea's high-tech industry.

Choi Su Jung, a 16-year-old high school student, is brutally murdered by a serial killer. Her friend Young Jin gets to take a phone call from the killer and says that she’ll find and kill him. Over two decades later, Young Jin has become a police officer and still desperately tries to find the serial killer. She has a young, middle-school-student neighbor Eun Ho. He gets shocked by what’s inside Young Jin’s room when he comes over to her place.

Drama series depicts the life of Hong Gil-Dong who is the the first revolutionist and dissident activist in Joseon.

The story centers on thieves who strike against people in high power who try to control Korea.