This is cat.

This is dog.

Cat and Dog look through the window.

They look through the window.

Then Cat and Dog see a butterfly!

The butterfly is pink.

Cat and Dog want to catch the butterfly.

Cat and Dog follow the butterfly.

They follow the butterfly.

Cat and Dog follow the butterfly by foot. They walk after the butterfly.

But the butterfly is fast. The butterfly is too fast and Cat and Dog are slow. They are too slow.

Cat and Dog follow the butterfly by bike. They ride after the butterfly.

But the butterfly is fast. The butterfly is very fast, and Cat and Dog are slow. They are very slow.

Cat and Dog follow the butterfly by car. They drive after the butterfly.

But the butterfly is fast. The butterfly is still too fast, and Cat and Dog are slow. They are still too slow.

Cat and Dog follow the butterfly by boat. They float after the butterfly.

But the butterfly is fast. The butterfly is super-fast, and Cat and Dog are slow. They are still super-slow.

Cat and Dog follow the butterfly by plane. They fly after the butterfly.

But the butterfly is fast. The butterfly is still super-super-fast, and Cat and Dog are slow. They are still super-super-slow.

Then Cat and Dog stop. They stop and sit down. They sit down at a tree.

They sit down at a big tree.

But then...

They see one butterfly in the tree.

They see two butterflies in the tree.

They see three butterflies in the tree.

They see a hundred butterflies!

Bye bye Cat.

Bye bye Dog.

Bye bye butterflies.