After decades in the U.K., ex-Scotland Yard detective Millie Black has returned home to Jamaica and joined the local police force. As she attempts to reconnect with her sibling, Millie and her partner Curtis are assigned the case of a missing schoolgirl that puts them on a collision course with both a powerful Kingston family and a U.K. detective.

In Kingston, Curtis faces the consequences of Millie's actions and must decide what matters most. Meanwhile, an undercover Millie arrives back in London. With few friends and scant resources, she must find and save Romeo before the mysterious "Lindo" can stop her.