Jake Sullivan is a war hero, a private eye - and an ex-con. He's free because he has a magical talent - being able to alter the force of gravity in himself and objects in his vicinity - and the Bureau of Investigation calls on him when they need his help in apprehending criminals with their own magical talents.
In an alternate world during the 1920s and 1930s where magic is as powerful as technology, Jake, an ex-convict with the power to manipulate gravity, becomes involved in a war between secret societies over one of Nikola Tesla's devices.