We would rarely ask ourselves if children in the cities were happy, in want of space to play, lonely, with their parents preoccupied, sad as they grow up all alone. Seven-year-old Lin is one of the millions of such kids in the so-called civilized world. He is smart, sensitive and inventive. Together with his friends he makes his games and child's dreams come true, though for just a while. Hidden in the attic of a deserted house, the kids experience unforgettable moments.