Peter and his mischievous cousin, Benjamin Bunny, go back to Mr. McGregor's garden to nibble on his ripe autumn vegetables.

The escapades of these mischievous bunnies in Mr. McGregor's garden come to life. After feasting on the cuttings in Mr. McGregor's garden rubbish heap, the Flopsy Bunnies are overcome by the soporific effect of overgrown lettuces and stolen away by Mr. McGregor. Moppet, Mittens and Tom Kitten's attempt to keep clean and tidy for their mother's tea party, and Jemima Puddle-Duck encounters a foxy-whiskered gentleman.

When the cupboard is bare at the Flopsy Bunny's burrow, the family all have to go in search of food. They soon find some old lettuces on Mr McGregor's rubbish heap, but who can imagine the horrors that await them as they enjoy a nap after lunch!