Aries is a beautiful woman with an ugly secret—she's part of the Murder Mamas, a crew of murderers for hire. Now that Robyn has been sentenced to die by the State of California, Aries is the only Murder Mama left standing. She's ready to bury her deadly past to move on and live a normal life. Her husband and son in Barbados have no idea of her true identity and the things she's done, and she's happy to keep it that way.
Unfortunately, Case has other plans for Aries. He's got a score to settle with Macy, a former partner who stole the woman he loved. Case might have let things go, except for one thing: Macy left behind the thug lifestyle to become the mayor of Los Angeles, and his new "clean up the streets" campaign is seriously cutting into Case's business. Case wants the mayor dead, and he only wants the best in the business to get the job done. Aries still has an unpaid debt with Case, and he hunts her down to tell her he's willing to cancel the debt—only if she completes the hit on Macy.
Knowing that Case won't hesitate to kill her family, Aries has no choice but to take on the assignment. She returns to L.A. vowing this will be her last job, but the unexpected death of Macy's son sets off a chain of events that puts all the players in serious danger. In this page-turning drama full of revenge, lies, murder, and mayhem, who will be left standing when the dust finally settles?