Jung-hye has too much money on her hands. As the daughter of a very wealthy family, she leads a seemingly perfect life on the outside. Inside, however, her marriage is rather a sad story, and things only get worse when her husband brings a child from an extramaritial affair. Having enough, she sets out to find the ‘Avengers’ Social Club’ with fellow neighborhood friends who also has desires to revenge on their husbands or frenemies.