A supernatural thriller about the lone female werewolf in existence begins when Elena is forced to leave the perfect life she has made for herself as a photographer in Toronto to return to Upstate New York after her wolf pack is threatened.

Clay makes it clear to Elena that he's still very much interested in her, but she keeps her distance, focusing her attention on tracking the killer "mutt" and getting back to her human life in Toronto. However, the discovery of a second body on Stonehaven property keeps the prodigal werewolf in Upstate New York indefinitely.

As the Alpha, Elena sets out with Clay to take down the Albino; Nick and Katia are captured by Roman's henchmen; Jeremy gets help from a surprising ally in his quest to kill Roman.

Old feelings come to surface for Elena and Clay, who find themselves in a dangerous situation when they track the Mutt to a warehouse and he turns into a wolf.

Elena and Clay deal with their growing sexual tension as they work together to figure out the who and why behind the plot to turn psychotic killers into werewolves.

Elena returns to Toronto, but her human life with Philip is interrupted when Santos arrives with a way out of the Pack. Elsewhere, at Stonehaven, Jeremy must fight to keep his Alpha status in tact.

Jeremy deals with fallout from the failed negotiations between Sasha and Roman; Elena attends to an injured Sasha; Clay and Alexei track down the victim of a young wolf's attack.

Nick, Paige and Rachel track Katia with magic; Elena invites Konstantin to Stonehaven and asks for his help; Clay and Jorge keep an eye on the Albino.

Elena comes up with a dangerous plan to take back Stonehaven, save the Pack, and change everything forever.

Clay investigates a mysterious symbol that may be related to witchcraft while the rest of The Pack interrogates a captive Malcolm. However, when both inquiries lead to the same destination, The Pack is faced with a disturbing truth – witches live among us.

In order to stay alive, Elena must guide Dr. Bauer through her first Change as The Pack and Coven try to figure out who Aleister is, and where his compound is located.

Aleister casts a mind-bending spell on Elena, forcing her into a battle against her own dark fears and demons. Meanwhile, Rachael is locked in a cage with Logan, struggling to come to terms with what he is. In a nearby forest, Clay and Paige must overcome their personal differences in order to find Aleister’s compound.

In order to solidify his power, a war hardened Jeremy has tasked Elena, Clay and Nick with recruiting all North American Mutts into the Pack. Meanwhile, Elena is accosted by mysterious new characters who challenge her with a surprising claim.

Elena is overwhelmed with memories of her romance with Clay, including the day she was bitten by a werewolf, as she defends him against murder accusations; at the same time, Clay's character is put into question when former Pack member Daniel Santos shows up with information on the Mutt uprising.

Daniel Santos, the recently revealed leader of the Mutt uprising, wants to sit down with the Pack and discuss a truce. But are they just walking into a trap?

A poisoned Jeremy grows weaker by the hour as Elena and Clay race against the clock to save his life, but run into hurdles as they interrogate a Mutt and contend with a werewolf wannabe.

Elena returns to Toronto for her art show accompanied by Clay, who keeps a protective watch over her while camping out on Philip's couch. Elsewhere, the Pack receive valuable information about the Mutts from an unexpected source.

Elena and The Pack are on the hunt for Malcolm. Meanwhile, back at Stonehaven, Jeremy receives an ultimatum from the Council of International Alphas that challenges his leadership over North America.

When a new threat proves to be more powerful than anticipated, both The Pack and Coven suffer heavy losses in the confrontation.

Elena awakens to find herself the subject of painful tests in a hidden compound run by a maniacal and powerful cult leader. Meanwhile, The Pack and witches must resort to dark magic in an effort to track down their missing members.

Having possessed Clay’s body, Aleister returns to Stonehaven where he creates ideal conditions to abduct Savannah. Meanwhile, Clay finds himself trapped in his unconscious, wrestling with both the occupying Aleister and his own mind in a way that could destroy him.

Elena struggles to deal with a new discovery about her past. Clay readies Stonehaven for a possible attack from the Spanish by calling in new Pack members. Meanwhile, Jeremy and Nick find a clue at the Spanish hideout that ultimately leads to them rushing back to Stonehaven.

Jeremy attempts to broker a negotiation to end the thirty-year blood feud between Sasha and Roman. Meanwhile, Elena watches over Pack prisoner, Konstantin, who tries to deduce why she is protecting Sasha.

When the new Spanish Alpha tries to blackmail Jeremy into murdering the Russian Alpha, the Pack has things under control until a surprise visit from Savannah upends their plans. Nick and Paige try to secretly meet Nick's mother.

Rachel and Logan battle their own demons as Aleister’s Undoing takes hold of the witches and has unexpected consequences for the wolves. The Pack and the Coven do their best to defeat him before sunrise—when life as they know it will change forever if Aleister and Clara get their way. A reluctant Ruth resorts to Left Hand magic to fight her son while a surprise ally appears to offer help to Jeremy and his Pack.