Lost in Space S02 E13 The Wreck of the Robot

"A space colony family struggles to survive when their ship is hopelessly thrown off course."

While playing a outdoor match, Will and Smith's ball explodes, and as the smoke clears there ball has turns into gold. the ball rolls into the cave which has 3 aliens inside, the alien wants the robot , which is later stolen when Will refuses to let them have it and Smith does. Can the crew get there robot back.