With the new Abnormal Homeland now openly under threat, Henry and Tesla learn that the SCIU weaponized Tesla's work to use against Abnormals. Bigfoot and Kate investigate Caleb's rise to power while Will and Abby look into Magnus' past.

The Five, led by Magnus, attempt to find the secret labyrinth in the decimated city of Bhalasaam. Once located, they must complete a series of cryptic tests that can only be achieved using each of their unique powers.

Will begins to experience strange visions that are connected to the Cult of Kali. Magnus has difficulty with finding the solution to their problems.

Seeking a gateway to the secret subterranean city, Magnus leads a treacherous mission to Tibet - telling a bitter Adam that he must stay behind while promising to bring back a cure for their radiation sickness. Because of their source blood, Magnus insists that Tesla and Druitt stay behind as well, taking the only shield Tesla was able to construct for herself. The hidden city, however, is rigged with deadly security traps - and death awaits the team at every turn.

The team investigate a murder in Mumbai, and find a connection to the ancient cult of Kali, whose followers can foretell disaster. However, Will falls ill and disappears, and is somehow linked to the mystery.

Abnormals in remote regions are subjected to an airborne biological agent that compels them to launch a violent string of murders

The Cabal's new "Super-Abnormals" begin destroying Sanctuaries around the world. It won't be long before they launch their attack on the Old City Sanctuary, and Magnus must choose between saving Ashley and saving the Sanctuary Network.

The Sanctuary team must find and stop Kali before the tidal wave could kill millions. Meanwhile, in Mumbai, Will is still fighting for his life.

The team goes on a routine mission to retrieve an Abnormal and take it to safety. But the mission becomes anything but routine when they are forced to stage a bank heist in order to protect the public from harm.

With Adam on lockdown at the Sanctuary, Magnus investigates his connection to Hollow Earth - and Druitt - while being forced to reveal dark secrets about the chaotic origins of the Five.

Magnus is revived to answer Ranna's questions and soon figures out that despite Ranna's efforts the city is in great deal of trouble and the fall of Praxis could also threaten the surface world however Magnus is able to help. Magnus and Ranna makes an understanding to help and she revives rest of the gang. Magnus manages to save the city with the help from Gregory Magnus meanwhile Will tries to breakdown Adam's plan that can cause huge trouble.

While leading a covert meeting in Rome, Magnus encounters an old friend from her past who confides that the cabal has come to exact revenge on her for the events in "Fata Morgana."

The search for Ashley puts Magnus and her allies in the path of Kate Freelander (Agam Darshi), a con artist with ties to the Cabal who divulges the location of a secret facility

When rich youngsters begin to disappear after an apparent death and then come back to life, the trail leads Will & Magnus to a drug clinic in Mexico run by Nicola Tesla. Knowing his all-times plans, big trouble to be expected.

Magnus has pursued Adam Worth back to 1898 London to stop him from altering and quite possibly completely destroying the future. As she battles to stop Worth, stay hidden from her past-self, and avoid taking any action that might change the events of history, Magnus must also figure out how to get back to her own present day timeline.

A disoriented Magnus wakes up to find the Sanctuary in ruins and the entire city decimated, with no memory of how the devastation occurred. While surveying the destruction, she is attacked by an inhuman creature but saved by two armed men who stun her and take her to an abandoned warehouse. After being hosed down and left shivering and exhausted, Magnus fears the worst when a battle-scarred figure enters the room.

Will goes up against the heads of the Sanctuary Network to defend Magnus who is charged with a shocking murder. But as the evidence stacks up against her, even Will has trouble finding a way to convincingly defend her innocence.

Magnus responds to an anonymous call for help at an abandoned building. But when she gets trapped inside, she discovers whoever made the call has a very different agenda.

Magnus and Tesla investigate a former Praxian stronghold and unintentionally stumble on vampiric secrets.

Receiving word that a large group of Abnormals has been spotted near a South Dakotan cave entrance, Magnus realizes it's the first wave of Abnormals emerging from Hollow Earth.

The team rescues the occupants of a sinking ship off the coast of South Africa and teleport them to the Sanctuary. However, Magnus suspects Druitt of murdering one of the passengers during the rescue.

Will suffers from amnesia regarding the events of his near-death experience, but some unwanted visitors become intent on finding out what is locked in his memory.

Word of a possible werewolf sighting prompts Henry and Will to visit an English psychiatric facility. As they probe a potential connection to Henry's Hyper Accelerated Protean past - and future - Magnus and Tesla investigate the mysterious holographic city.

Will takes command of the Sanctuary while Magnus and Druitt search for a critical artifact in London. Knowing that Magnus's only hope for a cure lies in the secret subterranean city, Will ignores her warnings and releases Adam-Hyde in the hope that he will lead them to an access point for Hollow Earth.

A colleague vanishes amid unexplained disappearances in Normandy, France, where Magnus and her team run into a military blockade during their investigation