Alex is a mild-mannered accountant who struggles to control her temper. After a particularly intense outburst, she is ordered by the court to attend an anger management program. There, she meets Stella, a tough and brash exterminator, and Nikki, a quirky dental technician. Despite their vastly different backgrounds and personalities, the three women form an unlikely bond over their shared frustration with the unfair treatment they experience in their daily lives. Their therapeutic sessions lead them to develop a unique and unconventional friendship, as they begin to take serious action against those who have wronged them.

Initially starting as a support group to vent about their problems, Alex, Stella, and Nikki soon find themselves empowering each other to stand up against their oppressors, leading them down a path of revenge that rapidly escalates. As they grow closer and bolder in their retribution, they establish a clandestine business where they take justice into their own hands. The trio navigates through various misadventures, confronting personal demons, and encountering unpredictable situations that challenge their newfound sense of solidarity. However, as their actions start attracting unwanted attention, the consequences of their vendettas threaten to unravel their lives and test the limits of their friendship.