Jay Park is visiting his family in America after being away at work for years. He's only visiting for the summer- from June 21 to September 21. He's expecting the visit to be relaxing and fun, since he gets to just play around with his old friends for three months. He just got home, and hasn't even gotten out of his mother's car when he sees Heeyoung. It's not just playing around anymore.

It is Halloween, the sky is beautiful, and the air is filled with the screams of the innocent. Heeyoung and her friends are out at the nearby amusement park, but Heeyoung isn't amused, nope, not one bit. She was immune to staged fright. She had been going to haunted events since she was little. How was a haunted mansion supposed to impress her?

Heeyoung had just been dumped by her boyfriend right after he told her he had been with another woman for almost half of their time together. The day after that traumatic moment, her well-off friend, Ayane, decides to bring her friends out to celebrate getting paid. Poor Heeyoung, though. How is she going to deal with falling for a host?

Junhyung and Heeyoung are enjoying an afternoon watching TV together when muddy tracks in the entry way trigger Junhyung's OCD. Heeyoung, hoping to help him get away from the habit for a little while, tries to think of ways to grab his attention.

Dongwoon is painfully shy. He's also very clumsy. He can't seem to help it when there were people around. He turned into a complete wreck. He has a comfort zone, though, and it lies in the library. One day, he bumps into someone on his way into the library- a girl- and she's pretty and reading his all-time favorite book. Now, he sees her in the library everyday. He wants to talk to her, and he has this huge crush on her. But what's he supposed to do? 

Kikwang and his family are out to dinner, and their food arrives. Kikwang is adoring every bite of the delicious meal, but something's not quite right. He can't breathe. Panicking, the restuarant calls the paramedics, and that's when he sees the EMT. She's beautiful, but it isn't long before he's unconscious. In his dreams, though, he meets this woman, and is easily captivated. 

"It was a sunny day, the sky blue, the birds chirping, as Doojoon strolled up to a mahogany door, a bouquet of red tulips in hand. He paused on the steps, smelling the flowers. His face relaxing, he checked himself in the glass before knocking on the door. He was excited. Today was their three-year anniversary and Doojoon was going to make it perfect." 

Kim Woo Bin, after a while of having not seen his love, Lee Jong Suk, waits to see him again while reflecting on what events got them to where they are now. He worries, though: what if Jong Suk runs away at first glance?