Having solved the matter of the Radiant Boy, Riley, Buttercup, and Bodhi are enjoying a well-deserved vacation. When Riley comes across a young ghost named Rebecca, Riley soon learns Rebecca's not at all what she sees. The daughter of a former plantation owner, she is furious about being murdered during a slave revolt in 1733. Mired in her own anger, Rebecca is keeping the ghosts who died along with her trapped in their worst memories. Can Riley help Rebecca without losing herself to her own nightmarish memories?