Three witches join basic training at Fort Salem where they'll prepare for the front lines, fighting looming terrorist threats with supernatural tactics and weapons.

The unit travels to Salem Town, but a disturbance throws the proceedings into chaos. Tally wonders if she made the right choice to embark on a military career. Abigail attempts to bury the hatchet with Raelle. Raelle grows closer to Scylla.

On the eve of Beltane, male witches arrive at Fort Salem. Raelle learns more about Scylla’s past. Alder leads an international military council of witches, and is startled by a new crisis.

The base celebrates the rituals of Beltane, where Tally and Gerit’s connection grows and Abigail finds strength in competition. Raelle is deeply affected by a tragic event and has questions for an evasive Scylla.

Abigail brings the unit to a High Atlantic wedding, in hopes of increasing their odds for War College. Abigail struggles under family pressures, while Raelle leans on Scylla. Tally makes a discovery that will alter the future of the unit.

Abigail has to come to terms with her vulnerability in the aftermath of horrific events, while Tally struggles with being supportive while also keeping a secret from her unit. And Raelle takes extreme measures to connect with Scylla.

Abigail forges a connection with Adil, a new visitor to base camp, and pushes a devastated Raelle to help him save a life. Tally uses Gerit as distraction from her increasingly burdensome secrets. And Anacostia probes into Scylla’s past.

The witches’ training culminates at Citydrop, their final training exercise. Devastating secrets come to light, splintering the unit and forcing Tally to question her blind trust. A Spree threat changes the course of the cadets’ lives.

In the aftermath of Citydrop, the unit comes closer together, while their distrust of Alder grows. Abigail is faced with eulogizing a fallen soldier, while Tally learns something new about Gerit. Anacostia grants one last favor to Scylla.

Raelle, Abigail, and Tally graduate from Basic Training, making Abigail more desperate than ever to prove her unit belongs in War College. Alder eyes the unit for a rescue mission while Anacostia and Scylla find common ground.