i have just watch the movie with my 7 year old . we both like the movie . i try to explain her couple of point about the story . she get little scared and but i tell her that we get scar from the thing we do not know . in my opinion and the movie be about save the future . the people on the future be suffer from the pollution and their generation be about to come to an end . to save themselves and they be wear the protective cloth . emma struggle and her one precious teardrop send with mimzy to the future and save the future . al they need be a pure and unpolluted memorabilia ( the teardrop ) from the past that will help them save the earth from the pollution . at the end of the movie and we be give small toy of mimzy and and we will cherish them to remind u about the future . we all have the job to save the future . every little try will count and like every disrespect about the earth will harm . this movie be a very good source for me to teach my daughter the importance of be earth friendly . thanks .