Season 1

Jung-hye suggests Do-hee and Mi-sook, who compromise with reality, form Avengers' Social Club.

Do-hee solves the problem of his son's assault. Jung-hye hears a tempting offer from Soo-gyum.

The club refuses Soo-gyum. Soo-gyum goes to the police, and Do-hee plans revenge with the club.

Byung-soo secretly plans to steal the gravesite. Someone sends a picture of the club to Soo-gyum.

The club tracks the sender of the picture. At the climax, the doorbell rings in Mi-sook's house.

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

Seo-yeon misunderstands Mi-sook and Soo-gyum. A secretary is asked to shadow Jung-hye and Soo-gyum.

The club is looking for the culprit of the mysterious, threatening letter. All face their crisis.

The club uses Hee-gyung to flip the script. Soo-gyum and Jung-hye propose a deal to aid each other.

They use the last resort to scold Jung-wook. Byung-soo plans to separate Jung-hye from Soo-gyum.

Mi-sook leaves home with Seo-yeon due to Young-pyo's violence. The club members prepare for revenge.

Su-ji is asked to reveal the interview was fake. Young-pyo holds a press before the club discloses.