The fox and the stork are friend.
Use the plural form here.
Also, pay attention to your tense. Keep using simple past tense when telling a story.
The fox and the stork were friends.
The fox like to play tricks.
{The fox} is the third person singular, so add an -s at the end of the verb.
But I believe you should use simple past tense here.
The fox liked to play tricks.
Be kind to your friend and they will be kind to you.
Use the plural form of {friend} here.
Be kind to your friends and they will be kind to you.
The fox asked stork to dinner.
“Poor Stork! She couldn’t eat a thing.”
You can say {She couldn’t eat anything.}
“Poor Stork! She couldn’t eat anything.”
The fox put the soup in a wide bowl so the stork can’t eat.
Simple past tense!
The fox put the soup in a wide bowl so the stork couldn’t eat.
The next day, Stork asked fox to dinner.
“Poor Fox. He can’t eat a thing.”
You can say {He couldn’t eat anything.}
“Poor Fox! He couldn’t eat anything.”