Centers around the Gold sisters: Lucy, Millie and Frankie. They live next door to the Silver brothers who they have a family type bond with, Lucy is even dating the oldest brother Ethan. Each sister is very close with one another but each has a secret they are trying hard to keep buried.
Everything seems to be going well, until one day Millie and Ethan find the body of Billy Godwin floating in the water. Soon a murder investigation is launched into Billy's death and as Frankie, Lucy and Millie uncover more surrounding Billy's death their bond is tested and they come to realize their beach side town isn't as peaceful as they thought.