Welcome to Sin City, the town that beckons to the tough, the corrupt, and the brokenhearted. A universe of unlikely and reluctant heroes still try to do the right thing in a city that refuses to care.

Mona Gray is a quirky young woman who hides in a private world of numbers after her beloved mathematician father falls ill. But when Mona is offered a job as an elementary school math teacher, she will introduce the students to her own eccentric gift for numerical obsession. Can the joys of arithmetic multiplied by a shy romance with the school science teacher help Mona discover a new life she can count on?