Now that Calla has accepted her ability to communicate with the Other Side, she's desperate to connect with the one spirit whose energy she can't seem to feel anywhere: her late mother. As ominous supernatural signs imply that the devastating loss might not have been an accident, Calla sets out to uncover the truth, convinced that a shadowy stranger may hold the key. But she gets more than she bargained for when she stumbles across a shocking secret about her mom's past—one that will change Calla's own future forever.