There are too many! I'll just rest here for a... ZZZZZ
This is way easier! ROOOAAAR!
The surviving owl notified the lions, the killer T cells, about the intruder. They ran around killing all animals and chameleons that had chameleon-like spots called antigens. The chameleons had begun to reproduce.
What a mess! I hate fights.
The lions killed off many chameleons but also killed many other animals. They called for reinforcements from the rabbits, or plasma B cells. The rabbits begin to rapidly produce ladybugs, or antibodies.
The ladybugs identify the chameleons and mark them, allowing the lions to destroy them more effectively.
After the chameleons are mostly wiped out, the giraffes are called in to clean up and end the fighting.
The elephants remember the chameleons so that next time, when they invade the animals' land, all the animals will identify them more easily and not as much damage will be done.