A CODA (child of deaf adult) student born with a gift for music crash lands at an unfamiliar place after time traveling through a suspicious music shop. There, he forms the band Watermelon Sugar with other mysterious youths.

Lee Yeo Reum gets dumped by her boyfriend and, soon after, her mother dies in an accident. She goes through one of her worst moments in her life. Lee Yeo Reum then makes the decision to live a complete different life from before and not do anything. She quits her job and moves to a small village, where everything is strange to her. There, she meets the residents, including An Dae Beom, and gets to know them. An Dae Beom works as a librarian. He hardly talks to people, but, when he does, he talks with a stutter. Somehow he gets comfortable and happy being with Lee Yeo Reum. Throughout this time, Lee Yeo Reum also discovers who she really is.

After unwittingly stealing money from a cartel, a cash-strapped professor finds the only way to save his broken family is by working as a drug courier.

It's Goo Ra Ra's big day. Sun Woo Joon catches her off-guard with a memorable first encounter, moments before her world comes crashing down.