When twenty-one-year-old social media star Chelsea Dawson disappears, Seneca, Maddox, Aerin, and Madison, noticing that she looks exactly like Aerin's murdered sister, Helena, investigate, determined to find the connection.
When Aerin is kidnapped by a killer she knows all too well, her friends Seneca, Maddox, and Madison have four days to solve a series of related cases in order to secure her release.