In which Donghae makes one of the biggest mistakes in his life, and Hyukjae and Donghae learn that sometimes, the pain that comes with falling out of love is irreversible.

Donghae earns a living by working at a diner. Hyukjae earns a living through crimes. One brief encounter and they're both living life on the edge after Hyukjae learns that Donghae is a kleptomaniac, but commiting crimes never ends well. Hyukjae and Donghae are no exception.

Lee Donghae is an amnesiac. Following an accident that kills his parents, he trudges through the next few years trying to piece his past together. On an afternoon by the waterfall, a redheaded man approaches him, presenting a key that unlocks the Pandora's box to his lost memories. Does he take it?

The first time they'd met, Donghae was merely a party magician, and Hyukjae, the father of the birthday girl. Fast forward fourteen years, they find themselves sitting in a cafe they'd visited ever so often in their courtship, celebrating the love they'd shared after all this time. Donghae finally finds the answer to a question he's wondered about all this while.

Before the pain, there is pleasure.  Taemin very apathetically awaits the arrival of the new student. He isn't looking forward to sharing his living space with a stranger, to be honest. Or at least he thinks he isn't looking forward to it. However, in walks scrawny, youthful, redheaded Hyukjae, who might just change his mind. Unfortunately, this isn't a love story.

For little Eunji's fourth birthday, single dad Hyukjae throws her a birthday celebration with the help of his best friend, Siwon, who helps plan the party. Much like Eunji, Hyukjae too, receives a present by the end of the party. A rather large one, in fact.