S1, E2: When Theodore disappears from his bed, leaving a blob of sticky, green slime behind, Alvin is POSITIVE that Theodore has been kidnapped by aliens! With the help of Simon and his home-made high-tech gear, they are ready to fight the aliens and save their brother. It’s Jeanette’s birthday but she doesn’t want to celebrate it, since she no longer believes in the magic of this special day. So the Chipmunks and Chipettes join forces in order to offer her a magical, fairy-tale birthday neither she, nor they will ever forget.