the sibling noah ( chris oneal ) and emma ( rhiannon leigh wryn ) travel with their mother jo ( joely richardson ) from seattle to the family cottage in whidbey island to spend a couple of day while their workaholic father david wilder ( timothy hutton ) be work . they find a box of toy from the future in the water and bring it home and and emma find a stuffed rabbit call mimzy and and stone and a weird object and but they hide their finding from their parent . mimzy talk telepathically to emma and the sibling develop special ability and increase their intelligence to the level of genius . their father become very proud when noah present a magnificent design in the fair of science and technology and and his teacher larry white ( rainn wilson ) and his mystic wife naomi schwartz ( kathryn hahn ) become interested in the boy when he draw a mandala . when noah accidentally assemble the object and activate a powerful generator create a blackout in the state and the fbi arrest the family try to disclose the mystery . but emma unravels the importance to send mimzy back to the future . the last mimzy be a delightful and refresh sci fi story and a great family entertainment . seven year old rhiannon leigh wryn and thirteen year old chris oneal be excellent in the lead role of smart sibling but the adult support cast have many disappointing line and attitude . the screenplay disclose since the very begin that mimzy be send from the future to save the human race and therefore there be no surprise or twist in the end . i do not have a great expectation in this adventure and and i have a wonderful surprise . my vote be eight . title ( brazil ) represent mimzy and a chave do universo ( mimzy and the key of the universe ) .