This is episode 35 of 50 of No. 13 Zoo. Play it below, then continue straight into the next episode — the whole season is free and needs no account.
The closing stretch of the season, where the arc pays off.
Tricked into running an abandoned zoo, Kyle discovers it holds mythical monsters disguised as cute creatures. He tames Cerberus, the Minotaur, and Hydra, gaining their powers. Searching for his missing father, he foils assassinations and stops a global disaster as the Golden Light Deity, then purges the traitors to become the new grave keeper.