An up-and-coming mobster named Doyle lurks on the outskirts of Roanoke's criminal underworld, vying for the approval of the powerful Kings. He's pushed too far, threatening Mackenzie and Ronnie and everything they hold dear.

For unknown reasons, Doyle considers a missing woman named Lemonade the key to his ascension. If Mackenzie can find her first, he might prevent a war against Doyle's vast family, the notorious rules of Boston. What he discovers, however, will send shockwaves far into the future for those he loves...