He made a promise he couldn't break. She has a power she never knew existed.

Belshegar isn't supposed to interact with humans. But after he's caught attending his friend Elena's wedding in human form, his punishment is severe: return to the mortal plane as "Bill Garrett" and retrieve several powerful artifacts from the McAllister witch clan - or face consequences beyond imagining.

Brianna McAllister has always been the odd witch out. Her scattered magic has earned her the nickname "Swiss Army knife witch" from her clan, useful but never exceptional. Between working at an art gallery in Jerome and performing at local wine rooms, she's made peace with her limitations. Until a green-eyed stranger walks into her life and awakens something extraordinary.

Their attraction is immediate and impossible to ignore. But as Belshegar's mission forces him deeper into deception, an attack from another dimension reveals the truth - Brianna is a harmonic, capable of balancing energies across worlds, a power not seen in generations.

When a being known only as the Collector comes for the artifacts and covets Brianna's rare talent, she must quickly master abilities she barely understands. With dimensions colliding and Jerome's safety at stake, Belshegar faces an unbearable choice between duty and a love he never expected to find. Together, they'll discover that some bonds transcend both worlds and punishment alike.