Jae Seok visits his old friends to see if they are suitable for his mixed-gender group for the upcoming summer season. First he visits Kwang Hee, but he somehow lacks what Jae Seok wants from a dancer. Then he visits Henry, but his unique approach to music doesn’t fit Jae Seok’s needs. Lastly, Jae Seok meets up with Rain, the legendary dancer.

While searching for the members for his mixed-gender group, Jae Seok successfully gets both Hyo Lee and Rain to join his team. However, he still needs a few younger members to complete the gang. With this being the case, ZICO, Kwang Hee, Code Kunst, and Simon Dominic visit the show to compete for the position by showing off their style of “Gang.”

Hyo Lee, Rain, and Jae Seok once again gather around to come up with their stage names and group name. From a list of intriguing suggestions, each picks the most appealing one. Meanwhile, Jae Seok is worried that Sang Soon might not like how Hyo Lee is quickly adapting to the flashy life in Seoul.

It turns out each member of SSAK3 has a completely different preference for a perfect summer song. Even the Myers-Briggs Type Indicator shows that Hyo Lee and Jae Seok should never work together as a group. However, what’s done is done. They have no choice but to come up with a song that can satisfy all three members of SSAK3.

Now that the members of SSAK3 have anonymously prepared the song of summer, it’s time for their songs to be tested among many other songs by trending composers. Meanwhile, the very last song on the table grabs Jae Seok’s attention. Although the composer still remains unknown, Jae Seok feels certain that this song will make a hit.

The Superstar Stylist, Han Hye Yeon, visits the show to give SSAK3 the ‘90s look. The members feel shy when they first see the fancy outfits. However, they soon become one with the outfits and start to fight over the center stage. As expected, Linda G takes the center while the other two members reluctantly try their best to assist her.

After thorough preparation, SSAK3 heads off to shoot a music video for their cover song, “In Summer” by Deux. As expected, Caregiver Hwang also joins other members to complete the bundle. Although B-Dragon gets constantly bullied by other members, he is willing to take the humiliation in order remain center stage.

This time around, Sang Soon visits the show as the songwriter to complete the recording of Summer Ocean Again. While doing so, B-Dragon does everything he can to attract all attention to himself. In the end, Linda G and U-Doragon lose their temper and complain about his self-centeredness. Nevertheless, B-Dragon is determined to stay in the spotlight.

Although U-Doragon wants to minimize the budget for SSAK3’s music video, the two other members want it to be as fancy as possible. Moreover, U-Doragon might not be as experienced in shooting music videos as Linda and B-Dragon, but he still shows off his unique skills. Meanwhile, they make a pledge to do an unprecedented challenge if they win first place in a music program.

The members of SSAK3 are visited by Park Seul Gi as a reporter for the group’s much anticipated debut interview. The fierce competition for center stage doesn’t seem to stop until the release of the music video, “Summer Ocean Again.”

The squabbling among the three members of SSAK3 doesn’t seem to stop even at the last practice before the debut. With Upset Rain on the verge of bursting into tears due to continuous bullying, they officially debut on Show! Music Core. When all fellow singers gather on the stage for the final score, the members of SSAK3 realize that they are on the list of first place candidates.

After weeks of hating and nagging, B-Dragon and other members of SSAK3 gather for their final performance together on a music show. While other idol groups are surprised at their unprecedented, fancy meals as well as U-Doragon’s surpassing live performance, SSAK3 waits for the final score as one of the first place candidates.

After a short but exciting roller coaster ride as SSAK3, the members meet for the last time before their disbandment. As a special treat, B-Dragon prepares a feast of abalones, wishing the older members a brighter future. While Linda and U-Doragon respond to him with gratitude, a surprise, tear-inducing gift from the fans awaits them.

Because of the help he received from many friends, Jae Seok was able to handle all the alter egos. To show their gratitude, the production crew prepares a kimchi-making challenge. The final products will be delivered to each of his friends. Although he’s not totally confident, Jae Seok does his best to show how grateful he feels to have them by his side.

Canola Yoo starts the year with his two assistants, Dong Seok and Young Gil, as he looks for the next big stars in the variety show industry. With a list of candidates in mind, he invites a few of them to his office. The first guest is Jo Byeong Gyu, who’s known for his roles in “Sky Castle” and “Hot Stove League'.' Later on, Kim So Yeon from “The Penthouse" shows her natural side of silliness.