Julien, is an ornery butterfly collector. When eight-year-old Elsa and her often-absent mother move into the apartment next to his, the persistent and curious Elsa adopts a reluctant Julien as her surrogate grandpa. But when Julien leaves town for a week-long hiking expedition in the Alps to find the "Isabella," an exotic butterfly as elusive as it is beautiful, he instead discovers an uninvited companion - Elsa!.
