The concept is good and the outdoor setting is great.. but the blindness thing not so much.. they go around fast like they could see everything.. even a bind person in her house moves slowly with careful steps and touching while here they run through the forest and you never see them trip or fall.. once or twice tou see some reaching and ear close ups to indicate that they're focusing on hearing but nahh it wasn't good enough.. it'd have been much better to make something simple like because of *insert reason here* everybody now is born with brown eyes and now twins were born with baby blues.. a much better plot