One day Lunny the little rabbit gets a visit from Mx. Birthday, a stork who celebrates everyone’s birthday. The only issue is that Lunny doesn’t know when bun’s birthday is because bun has always been alone. After rounding up ducks, boar piglets, lions, and even an old tree who forgot his birthday, the group is ready to party, but Lunny confesses bun’s birthday issue. Thankfully, bun’s new friends suggest bun live in the forest with them and party with everyone.