Episode 1

S02 E01 • Friday, Feb 10, 2017 • Feb 10 • 1h 20m

The 7 members with different looks, personalities and skills have gathered to achieve one dream of becoming a girl group to rewrite their forgotten dreams. Sister’s Slam Dunk Season 2!

Episode 2

S02 E02 • Friday, Feb 17, 2017 • Feb 17 • 1h 20m

Girl group project division conference! Vocal trainer, Jang Jinyoung! Who will be placed first in vocal test out of all the members? Dance major team vs. minor team's one point lesson! Then they all head to their accomodation where they will be living together until they become a girl group!

Episode 3

S02 E03 • Friday, Feb 24, 2017 • Feb 24 • 1h 20m

First night at their accommodation! Somi's teen love story is revealed during the members deciding on rooms and rules! The members bare face with no makeup and weight is revealed! For homework given by the dance teachers, the practice continues until late in the night. the Result is?

Episode 4

S02 E04 • Friday, Mar 3, 2017 • Mar 3 • 1h 20m

Han Chaeyoung's another try at making midnight snack! All the rising girl-groups are doing a personality test, what would the Unnies' members' personality be like? The new song with members' self-written lyrics is revealed at last!

Episode 5

S02 E05 • Friday, Mar 10, 2017 • Mar 10 • 1h 20m

First private vocal training! Somi fell in love with the vocal trainer, what has happened during the lesson? Yewon's house is revealed! From house-warming food, pajama party to Yewon and Somi's birthday party. What is the news that shocked every member of the Unnies?

Episode 6

S02 E06 • Friday, Mar 17, 2017 • Mar 17 • 1h 20m

The sad stories behind all the member's success are revealed. The reason why Jinyoung's green room became flooded with tears is? The new and an added song is finally revealed. How will the members react?

Episode 7

S02 E07 • Friday, Mar 24, 2017 • Mar 24 • 1h 20m

1 vs. 1 speed lesson with vocal trainer, Jang Jinyoung. He picks and solves all the members problem at once! Hong Jinkyung becomes the dance centre from being in last place! The choreographers only had one week to choreograph and the dance is finally revealed! The dance ranking over turns, who became the first and the last place?

Episode 8

S02 E08 • Friday, Mar 31, 2017 • Mar 31 • 1h 20m

Verse 2 specialty, Kim Sook. Will she be able to sing in the first verse? The part division war begins! Who will take the part of "I feel like a fish in water?" Mr. Serious, Jang Jinyoung's dance is revealed! A meeting about the concept for the girl group outfit. What will the final concept for the Unnies?

Episode 9

S02 E09 • Friday, Apr 7, 2017 • Apr 7 • 1h 20m

They practise their dancing until late at night! The full choreography for the song is finally revealed! The Unnies will be performing on the stage for the 300th episode special on "Immortal Songs!" The members attempt at rapping with Killagramz!

Episode 10

S02 E10 • Friday, Apr 14, 2017 • Apr 14 • 1h 20m

Unnies are performing on the "Immortal Songs'" 300th episode! One on one lesson with Director Han Wonjong. The recording finally begins.

Episode 11

S02 E11 • Friday, Apr 21, 2017 • Apr 21 • 1h 20m

The members try on the girl group stage clothings and also reveal their own stage outfit! The sudden change in the singing parts. The recording session finally completes!

Episode 12

S02 E12 • Friday, Apr 28, 2017 • Apr 28 • 1h 20m

Episode 13

S02 E13 • Friday, May 5, 2017 • May 5 • 1h 20m

The members go to Busan trip by train! From restaurant tour to filming their own music video. They show all their cuteness and talent just for spicy rice cake! For their music video, the Unnies cast special guests on spot at the beach!

Episode 14

S02 E14 • Friday, May 12, 2017 • May 12 • 1h 20m

Unnies' "Right?" is revealed. They dance endlessly for the music video shoot! The Unnies also act with chameos for the storyline for the music video. They film individual scenes and then moves onto the KBS studio for the last dancing shoot. The whole music video and the song is revealed!

Episode 15

S02 E15 • Friday, May 19, 2017 • May 19 • 1h 20m

Unnies finally perform on "Music Bank!" What happens afterwards? Never ending tears in every scene. Jinkyung says, "What's wrong with me? I must have "Music Bank" disease or something." Everyone is so tense before performing on "Music Bank."

Episode 16

S02 E16 • Friday, May 26, 2017 • May 26 • 1h 20m

As promised, the Unnies perform "Right?" dance on the bridges during the commuting hour for getting 1st on music charts. Their last performance at Konkuk University festival! The Unnies give a lecture and have a talk concert with the students.