On her 16th birthday, Gwendolyn Shepherd finds out that instead of her cousin, she has inherited a rare gene that allows her to travel through time.
Gwen has just discovered, that she's the final member of the secret time-traveling Circle of Twelve. Now she has to juggle with constant trips to the past, her relationships with Gideon and figuring out dark secrets surrounding the Circle.
Within the spectacular, complex and corrupt world of gladiatorial sports in Ancient Rome, follow an ensemble of diverse characters across the many layers of Roman society where sports, politics and business intersect and collide.