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

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, and Will races to protect his family 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.