New journeys and revelations await the Landry family across generations. At the beginning of season 4, Alice is about to graduate high school, Kat and Elliot dream of the next steps for their relationship, while Del realizes she will soon be an empty-nester again. But Del, Kat, Alice and Elliot should know by now that no matter how hard they try to focus on the future, the past is never gone. As more mysteries are unearthed, the Port Haven of the past and the Landry family of generations before might just contain the answers they seek.