Wuffi Wuff, a lovable and cheerful St. Bernard, one day realizes that his doghouse has suddenly become too small for him. This makes him terribly sad. Desperately, he flees from his new, larger self and wishes to be like he was before. Along the way, he meets the anxious bumblebee Brummel, who has just had to hide from a bird in a burrow and is still trembling with fear. Together, the two set off on a journey to learn to trust again, overcome their fears, and accept themselves as they are.