A story about who's the biggest-and being a good brother -in the best-selling series about Simon, the cheeky rabbit Simon is annoyed. Casper has grown a lot: three centimetres! But Simon is only one ridiculous centimetre taller than last time. “No way!” he says, “I'm the biggest!” Simon sees injustice everywhere. And he doesn't even care when silly Casper gets bullied at the park... Actually, he does care! And he can help out-so who's the biggest now?