In a small town in the United States, strange things start happening but nothing that catches the attention of the locals. 33-year-old Dylan works at a firm with the 25-year-old childhood friends Lucas and Alex (who clearly have a special chemistry) and has a younger brother named Ethan, who is 18. One day, a girl named Emily appears and claims to be Dylan's twin sister. He doesn't believe her because he thought she was dead, but with the help of Ava and Olivia (two 40-year-old friends who work at a hospital), they discover that she died in the past but was resurrected.
As the season progresses, strange things continue to happen in the town while new revelations come to light, especially about Ava who discovers that she also had a twin brother named Vincent, who died for betraying the secret organization responsible for the strange happenings.
