Escape to Witch Mountain (1975)

Tia and Tony, two gifted orphans, find themselves pursued by Lucas Deranian, who pretends to be their uncle to deliver them to the sinister millionaire Aristotle Bolt, eager to harness their abilities for his own gain. As they flee, they encounter Jason, a jaded widower who becomes their ally on the journey to the mysterious Witch Mountain. In their quest for safety, the siblings not only seek refuge but also help Jason confront his grief and rediscover hope amidst the chaos threatening to tear them apart.