This pre-teen comedy finds the studious Grover (Jay Underwood) using the notes of his late scientist father to complete a project. With unsolicited help from pigeon droppings, a substance is created that renders the consumer invisible for 30 minutes. The effectiveness decreases by five minutes with each dose, inexplicably expanding to 30 again on the eight attempt. This gives Grover the power to fulfill every hetero teen-male's fantasy; a visit to the girls locker room. Karen Black plays Grover's dizzy mom. .
~ Dan Pavlides, All Movie Guide