Lost In Space - Season 3eps8 -

: Upon returning to Alpha Centauri, Will confronts SAR. SAR attempts to kill Will by stabbing him in the heart once more. However, this was a calculated move: Robot had transferred its consciousness/data into Will’s artificial heart.

Will Robinson, whose artificial heart is failing, travels to the robots' home planet with Dr. Smith and Robot. Lost in Space - Season 3Eps8

A major theme of the finale is "trust," specifically the belief that alien robots can be freed from their rigid programming through acts of compassion. : Upon returning to Alpha Centauri, Will confronts SAR

: To save Will, Robot seemingly sacrifices itself to reinforce Will's mechanical heart. Will Robinson, whose artificial heart is failing, travels

The episode begins with the robots launching a full-scale attack on the human colony. Maureen Robinson devises a plan to use the landing Jupiter ships to overheat the colony's defense systems, creating a massive power surge to juice up the protective forcefield. While the shield successfully destroys SAR’s ship upon impact, SAR and several other robots survive the crash, continuing their assault on the ground. Trust and the Robot Revolution