Avengers Social Club

Jeonghye, who has been working on having a baby, notices that her husband is cheating and has a baby out of wedlock. Jeonghye talks about revenge with Mi-suk after she acknowledges Mi-suk's husband's domestic abuse.

After forming Avengers Social Club, three women are slowly getting to know each other. Then, for Dohee's son who is suffering from his school life, three women manage to clear out the grumpy parents of a student who beat Dohee's son.

After a long debate, Avengers Social Club denies Su-gyeom's suggestion. After that, three women and Su-gyeom meet together accidentally and Su-gyeom re-asks them to help his revenge. Meanwhile, the club members prepare for another revenge.

Dohee gets disappointed in Mi-suk since her daughter is a friend of Dohee's son's bully. Due to this problem, the club is in danger of being dismantled; however, Jeonghye and Su-gyeom try to recover the relationship between Dohee and Mi-suk.

Avengers Social Club cannot figure out the one who sent the photo to Su-gyeom. Still, the club celebrates their minor revenge. After celebration, Su-gyeom who visits a hospital for an annual checkup figures out the one that sent the photo.

Hee-gyung is cornered by Sang-man's unreasonable demands. Su-ji threatens Jung-hye with the picture.

A rumor about the existence of the club hangs around. Seo-yeon suspects the relationship between Mi-suk and Su-gyeom, and Byung-su suspects that there is something between Su-gyeom and Jeonghye. Moreover, the principal notices something.

Avengers Social Club gets an anonymous threatening message; members try to figure out the sender. Sang-man also tries to discover the identity of the club. At that moment, Dohee gets a sudden suspension on her business.

With all the members' help, Dohee finally gets an apology from grumpy parents and a confession from Sang-man. With the confession, Mi-suk interviews with a journalist about her family. However, Jeonhye's situation does not go well.

Husbands of the club members finally acknowledge the existence of Avengers Social Club, and Byung-su plans to send Jeonghye and Su-gyeom away. Mi-suk finds out a hint to disrupt Youngpyo's election campaign, with the members' help.

Mi-suk brings Seoyeon with her to get away from Youngpyo since he finally beats Seoyeon. Jeonghye and the club members plan to rather send Byung-su away, but Byung-su looks for his own revenge on Jeonghye. Mi-suk's mother-in-law passes away.

After Su-ji's false interview, Mi-suk's press conference faces danger due to Youngpyo's false announcement arguing that he is now retiring from the candidate and his wife is in mental illness. Yet, to save Mi-suk, a special witness comes to meet her.