Pepper, a black feline. She looks like a Serval Cat. 

Ray, a brown canine. He looks like an African Wild Dog.

They live in a forest and lead a peaceful, ordinary life. However, deep inside, they crave freedom and a real adventure.

--

There was a legend.

There is a wolf who's howl can be heard from miles away. He can go everywhere he wants; and is not limited by time and space. There is a deer who cannot be seen but can appear wherever she wants. There is a horse who can run forever, never tired, never caught.

All three creatures lived in a mystical forest. No one in the world had seen them. Those who searched never came back.

What are these creatures? Where are they?