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. ...

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. ...

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

Maureen finds a solution to the fuel issue, but putting her plan into action proves trickier than expected. Dr. Smith realizes her cover is blown. ...

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. ...