Yeon Woo is a director who has made one of the most popular films in the world, but recently has failed to deliver anything of note, leading to a slump in his career. By chance, Yeon Woo pays a visit to a popular web novelist in the hope of adapting his best-selling work, not realizing that the author is the long-lost Woo Jae! Past grievances caused them to part ways, but now that they are reunited, will they be able to resolve their misunderstandings and become each other's happy endings?

A girl wakes up in a huge secret laboratory, then accidentally meets another girl who is trying to protect her house from a gang. The mystery girl overthrows the gang with her unexpected powers, and laboratory staff set out to find her.

In the dead of night, a body donated for organ transplants mysteriously disintegrates into ashes. Soon after, five recipients, given a heart, corneas, lungs, liver, and kidneys, begin to develop supernatural powers. A teenage girl gains immense strength, a hipster manipulates electromagnetic waves, a novelist summons powerful gusts, a factory manager can heal others, and a woman discovers a strange, still-unidentified ability. Together, they form a reluctant but heroic team known as "HI-FIVE." But they aren't the only ones transformed. A cult leader who received the donor’s pancreas gains the terrifying power to drain life energy and sets his sights on stealing the abilities of HI-FIVE to achieve godlike domination.

An idealistic policeman must bring down his estranged older brother, now a powerful gangster in a South Korean port city.