The Robinsons Were Here
Directed by Alice Troughton
John, Maureen, and Judy head out to meet another group of survivors from the Resolute: the Watanabe family, who plotted the locations of a number of Jupiters before landing. It turns out that everybody's fuel got eaten, leaving them unable to launch back into space. The Watanabes also rescued Don and Angela (thanks to a tracker on Debbie the Chicken). Judy treats Angela's injuries and learns that the Robot is responsible for the crash and that it killed people. The parents take Don to the location of a crashed piece of the Resolute that they are hoping will contain communication gear that they can use to talk to the ship, since it can't seem to receive their transmissions.
Meanwhile, Will is learning more about the Robot, which draws a mysterious symbol in the sand and identifies it as "Danger". Judy returns and confronts Will, whereupon he offers to take the Robot to a cave that he located nearby, where it can wait until he's had the chance to tell his father the truth and decide the Robot's fate. Penny goes with them; along the way they discover the planet's beauty along with more of its dangers. The Robot continues being useful, scaring off a wild animal and making a path over a gorge by knocking down a tree.
The group also encounters another band of survivors, led by the colony representative, Victor Dhar, but hides from them to avoid revealing the Robot. Penny forms an instant attraction to Victor's son, Vijay, who accidentally discovers them. She steals a prized possession from him and blackmails him with it, telling him to keep the Robot a secret.
Maureen, John, and Don find the wreckage, but not the parts they were hoping for, as Don is revealed to have been smuggling whiskey to the colony in the relevant crate. It ends up being a moot point, as they discover the Resolute's main communication dish on the ground with them. Their Chariot's battery is depleted, forcing them to spend the night. As John and Maureen discuss their relationship, an earthquake topples the dish, trapping them until Don can break them out. Maureen reveals that she found out about John's voluntary reenlistment, which is what caused her to believe he left their family and prompted their marital stress.
The children and the Robot also end up sleeping away from the ship, in the cave that Will discovered. Penny is inspired to write "The Robinsons were here" on the wall, echoing primitive cave paintings, and the children sign it with their handprints. In the night, Judy sees the Robot do the same thing, and wonders whether she might have misjudged it. Everyone marvels at a spectacular nighttime display of phosphorescent insects. Smith, who has been following the children, observes from nearby.
In the morning, Will sadly leaves the Robot in the cave, promising Judy to tell his father the truth soon. The kids return to the Jupiter at the same time as their parents, barely avoiding being caught. Smith, who stole the gun, approaches the Robot and tells it that Will will betray it, offering her own loyalty instead.
