In the small town of Ipswich, four young men – Caleb, Pogue, Reid, and Tyler – share a centuries-old secret amongst their families: they are descendants of colonial witch families, which grants them special powers. As they approach their 18th birthdays, the time comes for their powers to ascend, a rite of passage for the young warlocks. However, this power comes at a cost, as using it accelerates their aging process, a curse that has plagued their lineage. With high school pressures and the normal challenges of being teenagers, the group tries to navigate their last year while adhering to the rule of keeping their powers a secret from outsiders.

The arrival of a mysterious new student, Chase, at their elite private school, Spenser Academy, brings undreamed-of challenges and unveils hidden dangers. As strange events begin to unfold around them, it becomes clear that Chase harbors secrets of his own, leading to a confrontation that threatens the covenant's very existence. The group must unravel the mystery behind these disturbances, dealing with issues of trust, friendship, and the dark legacy that has been passed down to them. Their bond is tested as they face off against dark forces beyond their imagination, forcing them to confront the true meaning of power and the ultimate sacrifice it may demand.