Donghae comes back to his hometown, Mokpo, after almost one year he hasn't gone home because he's too busy with his pastry shop in Seoul. He really missed his eomma and his hyung. He decided to take a one week 'vacation' in Mokpo, because he missed Mokpo, its sea, its street, and of couse his best friends here. Donghae missed them so much, because when he went home before he didn't have much time (even he couln't meet all of them) to spend a day or talking much with them.

Donghae misses his best friends: Heechul, the oldest who's currently in the army (so sad he can't meet him for now). Yunho, who always protect him and the others. Boa, the petite girl and the mood booster. And Seohyun, the smartest and mature maknae who also everyone's little princess.

Kim Heechul

He is a type of bad guy (or maybe a boss type). But he's kind of best friend you will never regret to have. Easy going. A lil bit player (but it's okay since he has pretty boy face, that every girl adores). He's easy to get mad, but Seohyun is exceptionally. He's currently in the army. And everyone misses him. He's the fourth person that Donghae respects the most, after his father, mother, and his hyung. Donghae always does what Heechul says to him.

Jung Yunho

Tall guy and handsome. He's the kindest amongst his best friend who will be in the middle when his Heechul hyung has arguing with Donghae or Boa. He's strong because he's very good at taekwondo. He will beat everyone who teases his best friend. He has charisma even the oldest Heecul doesn't have. For Donghae, Yunho is his idol.

Kwon Boa

Cheerful girl who will be the best friend with, when everyone in sad mode. Active, talkative, and loves kids. She will be a good friend when her friends need someone to share. Many guys like her, but she only has feeling to one guy. Donghae and Boa have been clasmmates since elementary until high school. They know each other very well, except their feelings.

Seo Joohyun

Her name is Seo Joohyun, but because her grandma calls her Seohyun, everyone started to call her like that. Seohyun became friends with each others after she yelled at Heechul who didn't throw his Pepsi can into rubbish bin. Seohyun's bravery (at that time, Seohyun was still in elementary, when the others already in middle an high school) really amazed Heechul. He wanted little Seohyun to join his 'gank'. Seohyun rejected at first because she was afraid with Heechul. But one day, when her senior bullied him then Yunho and Donghae helped her, she agreed to be their friends. From then on she becomes the maknae who will always yells to her oppas and unnie if they do something wrong. Donghae is really adores Seohyun's personality. Deep inside his heart, he promised he will protect Seohyun, because for him Seohyun as his precious dongsaeng