Two guys, a train, and lots of steam.

Sam Chancellor has been in love with the steam engine Old Bess since he was six years old. Well, maybe not literally, but even when he's lost everything else in his life, he's always had her. But now her place in his heart has been unexpectedly challenged. Her new driver, Ryan Saunders, is the embodiment of all Sam's fantasies.

Ryan has written off Sam as just another geeky trainspotter—until the moment Ryan sees him without his usual shapeless hoodie, and realizes that for a nerd, Sam's pretty built.

When Ryan overlooks Sam's awkwardness long enough to suggest a hook-up, Sam seizes the opportunity—and Ryan—with both very eager hands. Finding common ground in their shared love of Bess, their time together is better than Sam ever dared dream.

But there's a reason Ryan never talks about his past. And when Ryan's job is threatened, Sam's well-meaning intervention puts both Ryan and Bess in deadly danger.

Warning: Contains train geekery, bed-hogging, a hero with no experience and another with plenty to spare, and a spider called Mabel.