After running out of fuel during the midnight hospital run, Budgie finds that the field on which he landed is actually a frozen pond. Pippa then gets stuck in a snowdrift while delivering his fuel.
After Budgie laughs at Lionel's mishap with a vacuum cleaner, he is not allowed to take part in the Harefield airshow and ends up on lobster duty as a punishment. After he accidentally loses the lobsters, he gets called to a fog rescue.
The river overflows, flooding Harefield. Budgie, returning from the aircraft carrier, locates the source of the flood and attempts to fix it whilst rescuing a stranded cow.
The two criminals from the airshow return to Harefield but are spotted. They steal a truck with the twins, Ben and Lucy, as unwitting stowaways, forcing Budgie and Pippa to give chase.
Budgie mistakenly ends up in a seaside town after rescuing the twins, and has to wait for Pippa to guide him home. He helps some people after they get stuck on a broken rollercoaster, while Pippa helps with a sand race.
All the aircraft at Harefield, along with Ken and Mike the mechanics, visit the Arctic Circle for an expedition. Budgie helps a fishing trawler which has become frozen, then rescues one of the professors of the expedition after he slips into a volcano.
During their Arctic Circle visit, Pippa, Ken and Mike are stranded on an ice floe broken off from shore. The mechanics are chased by a polar bear, until Budgie arrives to chase it away. He later saves a baby whale.
Farmer Hayes falls ill and cannot do his daily chores, leaving Ernest the tractor to ask for the aircraft at Harefield to help out. After much hard work, Lionel's engine overheats and a stray spark from it sets the hay on fire. Smokey's lack of water leaves Lionel in danger.
