The Magic Pebble and the Purple Dragon

One day after Jack had returned home from the village school around 4.15pm, he asked his mother if he could go down into the fields to play before is dinner. His mother looked at him fondly and told him that it would be alright as long as he made sure he was back in time for this dinner at 6.15pm sharp. Jack duly promised to be back by that time, and happily set off for another adventure...