Jacob's second year at school is coming to an end. In class, they learn about the short life of butterflies. Jacob wants to make a butterfly, whose wing markings resemble the big eyes of his severely disabled sister Pearl.
The big brother knows that he must soon say good-bye to his sister, who is spending more and more time in the hospital. With his grandma, Jacob explores his most difficult thoughts, when his parents are too tired to talk. Their joint walks in nature are a consolation, even after Pearl's life has ended.
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Jakobs andra skolår går mot sitt slut. I klassen bekantar sig barnen med fjärilarnas korta livscykel. Jakob vill knåpa ihop en fjäril, vars vingteckningar påminner om den gravt handikappade lillasystern Perlas stora ögon.
Storebror Jakob anar att han snart blir tvungen att avstå från sin syster som tillbringar allt mer tid på sjukhuset.
Jakob bearbetar sina dystraste tankar med mormor då föräldrarna inte orkar. De gemensamma utflykterna i naturen ger tröst också då Perlas liv redan är till ända.