The Sons of Anarchy (SOA) are an outlaw motorcycle club with many charters in the United States and overseas. The show focused on the original and founding charter, Sons of Anarchy Motorcycle Club, Redwood Original, often referred to by the acronym SAMCRO, Sam Crow, or simply Redwood Charter. The charter operates both legal and illegal businesses in the small town of Charming, California. They combine gun-running and a garage, and involvement in porn film industry. Clay, the charter president, likes it old school and violent; while Jax, his stepson and the club's VP, has thoughts about changing the way things are done. Their conflict has effects on both the club and their personal relationship, especially when Jax goes on a personal quest to cleanse the SAMCRO name and image.

Far away from the site of a gruesome murder, a teenager named Jill Johnson arrives at a luxurious home for a baby-sitting job. With the children fast asleep, she settles in for what she expects to be an ordinary evening. Soon, the ringing of a phone and the frightening words of a sadistic caller turn Jill's routine experience into a night of terror.

Roy Freeman, an ex-homicide detective with a fractured memory, is forced to revisit a case he can't remember. As a man's life hangs in the balance on death row, Freeman must piece together the brutal evidence from a decade-old murder investigation, uncovering a sinister web of buried secrets and betrayals linking to his past. With only instincts to trust, he faces a chilling truth - sometimes, it's best to let sleeping dogs lie.