The adventures of a boy searching for his mother with his only companion being a large Pyrenean mountain dog falsely accused of being dangerous.

The show is about a boy named Sebastian and his huge white dog, Belle. Over the course of the series, Sebastian travels through Europe, looking for his mother who left him with relatives in the French Pyrenees. Sebastian and Belle have a series of adventures due to his search, meet interesting people, and are chased by the police because they believe Belle is dangerous (when she is not).—Milda Harris

An animated adaptation of the novel "Belle and Sebastian" (1965) by Cécile Aubry. The orphan boy Sebastian lives in a mountainous village of Southern France, raised by his adoptive grandfather, Cecil. Sebastian is constantly bullied by other children for not having a mother. At age 9, Sebastian rescues the gentle dog Belle from euthanasia. The dog has been falsely accused of aggressiveness. Sebastian decides to cross the border to Spain with his new pet, while evading the police.—Dimos I