As Jax and Tara head off for a new life in Oregon, Clay pays a hitman to take out Tara. Potter uses Juice to find out more about the next big arms shipment.
Jax finally assumes the role of club president as a series of events begins to unravel Charming; the Niners seek revenge for Tig's behaviour.
Mulder and Doggett become trapped on an oil rig manned by crewmen infected with the mysterious black oil virus.