Milly's class have won an All-Ireland Climate Action competition, which means they're in with a chance of earning a coveted Green Flag award for their school. Best of all is the prize: a private tour of Fota Wildlife Park! Sure, what could possibly go wrong?

From the moment Milly and her friends arrive, chaos and calamity ensue - and of course Milly is totally not to blame for the butterfly breakout, the giraffe drama or the unfortunate incident on Monkey Island. Could the school lose their Green Flag before it even arrives?