When the pirate enters the house, all the others — Belinda, Ink, Blink, and Mustard — cry for help and hide in fear. But Custard, the little dragon who was always mocked for being a coward, bravely charges at the pirate. He snorts smoke and jumps on the pirate with a clatter, gobbles him up completely, and then wags his tail politely. Thus, the so-called cowardly Custard proves to be the true hero.
Source: The Tale of Custard the Dragon, poem
The examiner expects: (1) the contrast between Custard's earlier image as a coward and his brave act, (2) specific details of the fight — charging, snorting smoke, gobbling the pirate — and (3) the irony that the "coward" was the only brave one. Avoid just saying "he fought bravely" — include the action details for full marks.