Christian, a visionary scientist, studies wild geese. For his son, a teenager obsessed with video games, the idea of spending a holiday with his father in the wilderness is a nightmare. However, father and son will get together around a crazy project: save a species endangered, thanks to the ultralight of Christian! Then begins an incredible and perilous journey …

In 2257, a taxi driver is unintentionally given the task of saving a young girl who is part of the key that will ensure the survival of humanity.