Newly minted San Francisco police detective Manhattan Sloane lets no one get close. Especially lovers. Sloane has her reasons for keeping the world at arm's length. But then her first childhood crush, DEA Agent Finn Harper, reappears and changes everything. Harper has arrived in San Francisco to investigate a new street drug weaving its way into the city-a drug that has personal ties for Sloane. The two find themselves thrown together as they team up to take down a ruthless cartel lord. Soon sparks fly as old feelings surface, forcing Sloane to face her past in order to build a new future.