Tess Lee is a world-famous novelist. Her inspirational books explore people's innermost struggles and the human need to believe that there is light at the end of the tunnel--but despite her extraordinary success, she's been unable to find personal happiness. Jack Miller is a federal agent working in counterterrorism. After spending decades immersed in a violent world, a residue remains. He's dedicated everything to his job, leaving nothing for himself.

The night Tess and Jack meet, their connection is palpable. She examines the scars on his body and says, "I've never seen anyone whose outsides match my insides." The two embark on an epic love story, but old traumas soon rise to the surface as Jack struggles with the death of a loved one and Tess is forced to confront her childhood abuse. Can unconditional love help heal their invisible wounds? Together, will they be able to move from darkness to light?