A Broadway star. An adventurous architect. And the powerful Dom determined to claim them both.

Christian Rogers Stewart is no stranger to the stage, nor is he a stranger to the ways of the Trinity Masters. A legacy, he's grown up among brilliant, powerful people and he's more than ready to contribute to the society's noble cause when initiated as a member. However, he is blindsided when he's called to the altar by the Grand Master. First by lust for his arranged partners Charlotte and Vincent. And then by the revelation that the Trinity Masters are under attack, from within, by an insidious faction called the purists.

At their binding ceremony, Christian, Charlotte and Vincent are given two tasks: study the web of tunnels hidden beneath headquarters and investigate a suspected member of the purists, a fellow Dom in Vincent's clubs. By day Charlotte struggles to make sense of a coded blueprint of the tunnels. By night they investigate the wealthy, powerful Dom, with Vincent guiding his new lovers into the dark and sensual world of BDSM.

Both tasks lead the new trinity to earth-shaking discoveries. Not just about the purists, but about themselves and their own erotic desires.