Hania is an eleven-year-old girl whose family has just moved to a new town. She struggles to make friends, and her belief in pixies makes her the target of ridicule from her classmates.

When they steal her necklace — a priceless family heirloom — Hania becomes determined to get it back, no matter the cost. Setting out to prove that pixies really exist, she embarks on an extraordinary quest. Accompanying her is Michał, a school outsider and an inventor. Through his support and friendship, Hania gradually opens up to the world and discovers that true friendship is the real magic.