A Dragon Cloud

Freddy has in mind the story of a prince hunting dragons, with a long sword and a helmet emitting flashes all around... But every time that the dragon emerges in his thoughts, Freddy has something else to do: he is a very busy boy and it looks as though there is never time for the dragon.
But one morning up there, amid the rooftops, there's a cloud: it really seems like Freddy's dragon. At last that day, in the park, Freddy will find the right moment to tell his mother his story...