Everyone celebrates Trini's birthday with a piñata. Marc visits a visually-impaired boy navigating around his school and neighborhood. Trini discovers a boy whose vision was improved with a cornea transplant.
FILM INSERT: How A Television Works song (filmed at Connecticut Public Television with some stars of Sesame Street.
ANIMATION: How the eye sees.
THE BLOODHOUND GANG: "The Case of the Thing in the Trunk, Part Two." (Recycled from the episode called Fast/Slow: Speed and Racing). Using a pinhole camera effect with a piece of cardboard picking up light from a hole in the side of the van, the gang learns where the mummy is being stowed. They radio that information to the police after trapping the henchman.
