20 years ago, monsters appeared in the world. People have learned to pacify and tame them. Now monsters are ordinary pets of people.

Now you are in a store full of monsters of different types and sizes.

In the corner of the store, in a sturdy iron cage, sat a gloomy monster, curled up in a ball.

The seller said that this monster is not the best sample, and will soon be destroyed due to danger and tried to take you to cuter monsters...