Bill Nye explains some parts of the eye and explains how the eye works with the brain. Your eye captures the light and processes it, and your brain makes sense of your perceptions.

Beakman explains how vision works involving the brain and eyes. He then explains how this works to create optical illusions.

Temple, an autistic student, watches a short film on optical illusions and is immediately intrigued by it. She sets out to achieve the effects in the movie and does so after much persistence.

Beakman explains that shoes stink because of the bacteria on your feet. He uses a microscope to quickly show that there are bacteria everywhere and then a short animated clip to show how your feet produce oil and sweat that the bacteria eat. This creates smelly biproducts to make your feet stink. He then does a DIY bacteria growth experiment where he grows bacteria from his sweaty feet in a jar of gelatin.

The Jurassic Park crew are trapped in cars in the rain as they try to evade a T-Rex. They keep still to remain undetected, but the kids in the car turn on a light and attract its attention. When they shine the light on the T-Rex's eye, its pupil constricts.