Piper Walsh has always been a fighter. No matter how many times life has knocked her down, she's always gotten back up, her smile never faltering. So when she scores an internship in NYC for her final year of visual arts at Columbia, she's ready to take on the world-even if it means leaving her brothers and everything she knows behind. Things get complicated when a housing mix-up leaves Piper stranded without her best friend and instead crashing with five of New York City's most notorious-and ridiculously attractive-bikers. But these guys aren't what they seem. Beneath the tough exteriors and tattoos, Piper discovers they're more like a pack of lovable, overprotective misfits than anything else. All except for Greyson Lowell. He's broody, standoffish, and frustratingly gorgeous-every bit the bad boy with a past he's not willing to talk about. Greyson has a way of looking at her that sends shivers down her spine, but getting close to him is like trying to crack a safe that's been welded shut. He's sworn off happiness, carrying the weight of a tragedy he can't seem to forget, and Piper's sunny smile only seems to remind him of what he thinks he doesn't deserve. But Piper isn't one to back down from a challenge. With her heart on her sleeve and kindness in spades, she's determined to break through Greyson's walls. And as sparks fly and tensions build, Piper discovers that there's more to Greyson than meets the eye-and that sometimes, the toughest hearts are just waiting for the right touch to open up.