When a playful endling takes control of the farm house, locking Julia, Johnny and Finn inside, it's up to Tabby to save them. But figuring out how to stop this temperamental being, means learning how to win its game.

When Hewes’ plan succeeds, Julia, Johnny, Tabby, and Finn must let their hopes, not their hurts, shape their future in order to save Ling and their mission.

The future crashes into the present as Julia, Johnny, Tabby, and Finn deal with the aftermath of Hewes’s attack. In the fallout, our heroes will have to choose whether to come together or let their pain tear them apart.

As the search for the polar bear intensifies, our heroes accept a new foster endling into their family. Meanwhile, Tabby reconnects with her old life in a way Finn wishes he could.

To prevent the future Tabby saw in her vision the family only has two choices to deal with Hewes: run away or stay and fight. For Johnny that means moving past his own pain to see that Hewes has vulnerabilities of her own.

Hewes uses Johnny and Julia’s pasts against them as Ling unwittingly gives Tabby a startling vision of what’s to come, forcing the family to decide whether to fight the future or accept it as fate.

Tabby, Johnny, Julia and Finn race to save a trapped endling while a seemingly endless stream of drones try to capture it. Unhappy with her drones’ progress, Hewes and her team arrive to finish the mission themselves.

While Mr. Leopold confronts his past, Johnny, Julia, Tabby, and Finn must trap a recently released endling before it traps them.

Julia, a 14-year old orphan, is placed in the care of foster parent Mr. Leopold and joins his other charges, Johnny, Tabby and Finn, on a 2,000-acre farm; when an Alien's ship crashes into their barn, they learn Julia is not the only new arrival.

The pursuit of a mysterious new creature catches the attention of the local police. After a particularly close encounter, Mr. Leopold forbids Johnny from continuing the chase, causing a rift between foster father and son.

After Tuko's caretaker Abiona takes revenge on the Alien, Julia must find a way to convince her to help. Unfortunately, the Alien isn't the only being who needs saving as Johnny, Tabby and Finn deal with a new endling, this one from earth's own history.

The fight to save endlings continues as Julia, Johnny, Tabby and Finn track Hewes to her Infinitum facility. When Hewes cracks open an orb releasing a dangerous creature, our heroes have no choice but to bring the fight to her.

The escaped endlings on the Leopold farm put the family at odds, leaving Julia's future there in question. But after one of the creatures allows Julia to relive her past, it's up to her to decide whether or not she'll let her past control her future.

Finn accidentally releases an electrifying new endling as Tabby struggles with an impending reunion. Meanwhile a sighting of a recently extinct animal leads Mitra and Lopez back to Hewes.