LAPD officer Samantha is working undercover in a notorious demon's bar trying to catch him in the act of selling the new illegal drug Mindglow. Being half-demon herself gives her some advantages when hanging out in places such as this, but as she gets closer to the evidence she needs, chaos breaks out. A man at the bar begins to glow as he stands up to enter the fight with his dual swords and flaming red hair. Samantha can hardly believe she's staring at Tain, the immortal she helped save from an old one, who healed her broken arm and then just took off without a word.

Tain, the youngest of the Immortals and created to balance good and evil, was tortured for 700 years by a powerful demon before being saved by his brothers and their witches. Another woman helps, as well, and she's the one he's unable to erase from his thoughts. Staying away from Samantha is the only way Tain knows to forget about her, but now he needs her help. Women from demon clans are showing up dead and Samantha has the resources to help. Tain shows up at her home after helping her during the episode at the bar, intent on asking for her help, but his only thoughts are how to seduce her.

Tain's story is powerful, sensual and extremely exciting. The magical paranormal world created with the Immortal series is phenomenal. Absolutely fabulous!!