You're not? Such a shame. I can take care of that.
You see, back in Roman times there was this slave named Androcles. He runs away from his cruel master. He doesn't get far before coming tired and seeks refuge in a cave. He believes it's abandoned and falls asleep soon enough. It's not much later though that he's woken by a terrible roaring. Androcles shoots up to see a ferocious lion in there with him. At first look, he's monstrous and terrifying - a real danger.
At the second glance, he realizes there's a thorn in the lion's paw. Androcles befriends the lion by pullin the thorn from his paw. They help each other later on and when faced with having to kill each other, instead refuse to.