The 10-year-old Oscar has a dream, which is a trip to the prairie with his mother. Unfortunately, just before the holidays, Oskar's mom informs him about the planned trip to America. At that time, the boy is to be looked after by his grandfather, not too social and gruff. Fortunately, Oscar meets Levi and his - suffering from myopia - horse. Together, they decide to cross the Atlantic Ocean to find Oskar's mother in America.