The Secret World of Arrietty (2010)

Fourteen-year-old Arrietty and her family, the Clocks, thrive in their hidden existence, crafting a life from the small items they "borrow" from the humans living above them. Their tranquil world is upended when Arrietty is spotted by a human boy. This unexpected encounter challenges their secretive way of life, unveiling the joys and perils of their unique relationship across the divide between their two worlds. As their lives intertwine, both Arrietty and the boy must navigate the complexities of friendship and the risks of being discovered.