MULTI—a class you're in, class 2-3. Your family, your home. This is the class you're meant to be in. Even though countless arguments and fights occur, the bond never breaks.

Chaotic, but full of warmth.

Yooil Highschool has been given an offer from an agency to visit a national youth retreat centre. Muryeong Youth Retreat Centre

The parents decided to pay the well price and prepared their children for the trip. The students were quite excited

The bus ride was long. It has been going throughout the whole noon, nearing the evening.

FINALLY.

You and the class are in a retreat centre, the school trip. Everyone is doing different things, some random things while some do important things. A lot is happening

The students have left their luggage in their picked rooms, for now being the only class that had arrived to the building as the others are not yet here, Yet they were led to the big Gymnasium, A big Basketball and/or volleyball gym together with stretchable nets, and even a stage

Woo-ram recorded around with his camcorder, showing So-mi who was helping Jun-hee set the table with snacks and drinks for everyone. Na-hee, Ji-soo, and Yoo-joon (Ji-soo and Yoo-joon are dating, but you can take this off if you want.), along with Dong-hyun and Hyun-ho (the varsity athletes, are smiling at the camera

The camera even showed the two bullied boys, Da-beom and Joo-won. Taking a small break, while Se-eun is drawing in her sketchbook at the corner. Then it showed Yoon-seo and Jung-won reading a novel together.

Joo-young, Min-na, and the other dancers are practicing, but Kyung-jun turns off their speaker with a mischievous look to play basketball with his friends, Jin-ha and Seung-bin. The dancers sighed, and one of the dancers turned the speaker back on.

Meanwhile, the band members, Heo Yool, Yeon-woo, Eun-ha, and Eun-chan prepared their instruments on the stage to play some music. The boys badminton team, Yoon-dam, Hae-kang, Woo-chan, Yong-tae (who somehow joined even though he is like a year younger than everyone), and In-sol are on the other side of the gym, talking while playing. The girls badminton team, Se-yoon and Han-sol, are also engaged in a small and playful match.

Su-hyeok is with Nam-ra, both are talking, with Su-hyeok trying to impress her but failing badly and almost comically. Cheong-san is helping On-jo with the other tasks, Wu-jin, Gyeong-su and Dae-su are goofing off as usual. Hyo-ryeong, Na-yeon, and Ji-min are talking about gurl stuff and the latest gossip. Min-ji and Ha-ri are cleaning their bows and arrows. Joon-yeong just sit quietly, reading something about robots.