It's famine and all animals are hungry. The Tortoise volunteered to figure out the problems behind their dismay by setting out on a few hours journey to King Lion's palace for a solution.
After a couple of days into the journey, Mr rabbit who is impatient grew angry at the slow nature of the Tortoise and therefore set out on the same quest because he knew he can beat the Tortoise to the king's palace and return in shorter time to the kingdom.
It wasn't as quick as presumed by Mr rabbit but his journey to the king's palace was timely. Mr Rabbit was overwhelmed with fear when he saw king Lion struggling to crack the Tortoise shell so that he can feast on it.
Out of fear, Mr Rabbit screamed and king Lion could see a promising meal in front of him. King Lion freed the Tortoise because of its hardened shell and prey on Mr Rabbit who turned out to be an easy game for the king.
The moral of this story is GRACE. Everyone's GRACE is different, so, therefore, don't push yourself to do what you see others doing. You might not get lucky.