Sadie Eagan lives a fairly humdrum life in Vector City. Working at a coffeehouse is much safer than opening her own café. If only the local Superheroes and Villains would stop crashing through windows and driving up insurance rates. Then she meets her hot new neighbor: a fit woman with amber eyes, a disarming smile, and an air of mystery. Obviously, this means she's one of the city's Superheroes. And dating a literal hero would break the cycle of being with partners who take advantage of her.

Joan Malone does have a secret identity-only she's Spark, a notorious Supervillain. Shooting fire has always made people afraid of her. She's been trying to get out of villainy to open a food truck with her twin brother. When her cute and bubbly neighbor assumes Joan's a Superhero, well, Joan doesn't correct her. Sadie is the nice girl Joan has dreamt of being with. Though she hates hiding things from someone who understands wanting a better life.

Joan has to keep some rather inept Villains at bay while getting the Supers off her back. And oh yeah, while proving to Sadie not all bad guys are bad and not all heroes are heroic. Not that Sadie's paying attention-it's too exciting hanging out with a Superhero.

Only she's fallen for the bad girl. Again.

A rift with the other Villains forces Joan to choose what she truly wants. Can she be the goodhearted person Sadie thinks she is?