The Kratt brothers help to get back a scientific gadget.

Woody risks his "life" to save his penguin friend who was taken to be sold at a yard sale.

Darth Vader puts a bounty on the Millenium Falcon, which draws the attention of dangerous bounty hunters.

Katara confronts her mother's killer head-on, intending to get revenge. She quickly realizes taking his life would not bring her mother back and decides to walk away.  

Luke is rescued by Ben Kenobi, who is later revealed to be Obi Wan.