Lucy and Alex are going through a phase of walking to school together. They are easily distracted on the way and each day arrive progressively later. Alex and Lucy make excuses for being late explaining what has delayed them, but the stories become exaggerated into fantasy.
They stop to look at a spider which in the telling becomes a giant spider which catches them in its web. They mess about with the water from a fountain which becomes a tidal wave, etc. Each time their story becomes so outrageously exaggerated that the teacher doesn’t believe a word they say.
Finally, the teacher uses their incredible stories to play a trick on Alex and Lucy with the help of the other pupils.
Teacher's guide: Sorry, I'm late