An adolescent girl and her toddler brother, find a star that has actually fallen to earth, that turns out to be living being...complete with cosmic powers

Laura is seven year old country girl, who's just moved along with her family to a city. On her first night in their top floor apartment, she sees a shooting star, actually falling to earth, she finds it in a park and discovers it's a living being. Taking it back home, she and her toddler brother Tommy discover it can do miracles like making people fly and bringing inanimate objects to life. But over time both notice that the longer it stays on earth, the weaker it becomes, can they along with next door neighbor Max find a way to send it back into outer space, before tragedy occurs?—???