The mission to save Scarecrow takes an unexpected turn, throwing the Resolute into chaos. Judy hatches a plan to get a ship to Alpha Centauri. ...

Will and Penny scramble to hide the robots and figure out their next move. Meanwhile, Hastings amps up his war against the Robinsons. ...

While Maureen leads a mutiny, Hastings visits John to deliver an ultimatum. Penny tries to convince Will that his Robot has changed. ...

John recruits an unlikely partner to help hunt down a secret audio signal intercepted by the ship. Will begins to suspect Adler is hiding something. ...

The fast-spreading contaminant leaves Penny, Smith and friends stranded in tight quarters. Will and Maureen set out with Adler to find the Robot. ...

John's predicament goes from bad to worse, sending Judy on a frantic race across the planet. Penny spies on Smith -- with help from an old friend. ...

While Will searches for clues to the Robot's fate, John and Judy travel to the dusty surface of the nearby planet to help their fellow survivors. ...

Seven months later, marooned on a watery planet, the Robinsons make a risky bid to power up their Jupiter. Will vows to track down the Robot. ...

The Robinson family scrambles to launch from the Lost Planet, stage an impossible rescue, and reach the Resolute before it leaves orbit for good. Unfortunately, some have ...

Judy sets out to find Maureen, while Will and Penny lead an expedition to the caves. Dr. Smith pursues a new escape plan. ...

Judy and Don race home across the desert with their precious cargo. John and Maureen are dealt a heavy blow. Penny does her best to comfort Will. ...

Maureen debates whether to share what she saw in the sky, Don leads a mission to find fuel, and the robot's presence stokes tensions within the group. ...

As the team builds a tower to signal the Resolute, Maureen investigates a planetary anomaly, and Will braces for a tough conversation with his dad. ...

The Robinsons make contact with another family of survivors; Will races to protect his friend after Judy learns what happened aboard the Resolute. ...

Flashbacks reveal clues to Dr. Smith's past; The Robinsons contend with a new threat as the ship's fuel supply starts dropping - fast. ...

Another crash brings more travelers to the planet, as the Robinsons work to salvage their ship with help from their mysterious new companion. ...

On the way to a space colony, a crisis sends the Robinsons hurtling towards an unfamiliar planet, where they struggle to survive a harrowing night. ...