With their father in a coma, nurse Seon-young urges her brother Il-hoe, who cannot afford his son's tuition and risks seeing him miss college, to stage a fake funeral. They forge a death certificate and deceive the hospital, but as pressure builds, their plan begins to unravel in unexpected ways.

Deliveryman Jong-su is out on a job when he runs into Hae-mi, a girl who once lived in his neighborhood. She asks if he'd mind looking after her cat while she's away on a trip to Africa. On her return, she introduces to Jong-su an enigmatic young man named Ben, who she met during her trip. One day Ben tells Jong-su about his most unusual hobby.

Chi-ho, a genius confectionery researcher who has developed addictive flavors, experiences a sweet change when he meets Il-yeong, a call center worker at a loan screening company who thinks optimistically about everything, and goes through sweet changes.

Jang-soo is a judo instructor who is indifferent to everyone but his daughter. One day he realizes he can see Tae-jin, a ghost who used to be a devoted police officer. Tae-jin asks Jang-soo to help solve the case that took his life away from him.

At her dad's funeral, Kyungun meets her uncle Jaemin, a complete stranger. He bilks her father's insurance money. She demands her money back, but he unashamedly refuses. To get her money back, she joins his next scam.

Aging assassin Hornclaw has seen it all, but she never expected to mentor a reckless rookie like Bullfight. As their unlikely bond deepens, cracks form in the underworld they navigate together. When Hornclaw discovers someone wants her dead, she's thrust into a deadly game of deception. With enemies closing in and trust in short supply, survival means staying sharp—both blade and mind.