Taking place several months after the end of last season's final episode, the 2nd Mass attempt to liberate children who are being forced to work a mine, guarded by skitters and mechs.
Arthur Manchester investigates a mole in the ranks, and the Volm seek assistance in destroying a power source for Espheni weapons.
Adam, Melissa, and Jake set out on a mission to save Faye after she is attacked by the Witch Hunters. Blackwell tries to convince Cassie and Diana that the only way to stop the Witch Hunters is to use their Balcoin blood to unleash the Crystal Skull. Diana is reluctant to go along with the plan, but Cassie convinces her it's the only way to help their friend. However, Diana will need to tap into her dark magic for the plan to work. Dawn and Charles have an opportunity to get their power back, but it comes at a high cost.moreless
Kane and his team track a Sniper who is killing people in front of churches. One of the prime suspects is a trained sniper Kane knew in Iraq suffering from PTSD. Now, the squad need to find the killer before more people die and a possibly innocent man gets blamed for it. Meanwhile, Juliet must deal with the aftermath of Kenneth's death and her role in it.moreless
Kane and his team must deal with an Aryan Nation separatist community who;s involved in drug running. Meanwhile, a serial rapist case brings up bad memories for Juliet and could end her career.moreless