The movie begins with Willy at home sick and is pretending to be a hunter. Using his imagination to see his cat, Sissy, as the tiger, he torments the cat with his water gun. He then decides to shoot a BB Gun at a flock of sparrows outside at the local park, scaring them away, but angers an elderly lady who, in reality, is the Sparrow Guardian. She who magically enters Willy's apartment unnoticed and transforms Willy into a sparrow in hopes of teaching him a lesson of respecting all living things. However, she didn't have enough spray to make Willy have the ability to fly, rendering him defenseless. The Sparrow Guardian quickly leaves to refill her magic hair spray. While Willy was making himself comfortable in his sparrow form, Sissy appears and sees Willy as lunch instead of her master. Not used to walking like a sparrow, Willy was nearly eaten by his own cat, but was saved and placed outside by his little sister, Tonya. He soon meets two sparrows, Red and TJ, who discovers Willy's inability to fly and then calls help on an elder sparrow named Cipur to help Willy learn to fly. The three sparrows then carries the flightless Willy to safety, escaping an incoming attack from a persistent, hungry Sissy.