A woman with only a short time to live and a man with the supernatural power to bring the world to an end discover the true meaning of life and love.

Taek-il recklessly leaves home, defying his mother who asks him to go to college. In the unfamiliar neighborhood, he happens to get a job as a delivery man for a Chinese restaurant. And he mingles with new people such as Geo-seok, a chef, and Kyung-ju, a boxer. Meanwhile, Sang-pil, a friend of Taek-il, enters the private loan business to make money. At first, it seems easy to make a big fortune, but soon he finds himself in pain as he faces unexpected things.

In the afterlife, one guardian helps a man through his trials, while his two colleagues help a former guardian on earth.

Having died unexpectedly, firefighter Ja-hong is taken to the afterlife by 3 afterlife guardians. Only when he passes 7 trials over 49 days and proves he was innocent in human life, he’s able to reincarnate, and his 3 afterlife guardians are by his side to defend him in trial.

Jae-ho, who aims to become the number one in a crime organization, gets to build up trust with Hyun-su, an ambitious newbie in the prison. While they try to take over the organization after the prison release, their ulterior motives starts to emerge.