There is a disease, the Red Death, that kills super fast, in less than 30 minutes. It kills half the country. The disease is shown by its blood.
A rich and healthy ruler, Prospero, gathers over 1,000 of his friends and family members and runs far away to escape the Red Death. He builds a big palace with high walls and welds the gates closed with everyone safely inside.
Inside the palace, there are seven colorful rooms and all the food, wine, and music they want.
After 5 months, Prospero wants to celebrate. He has a masquerade ball. It is a very fancy party. Everyone wears fine clothes and a full mask. They dance in the seven rooms and enjoy themselves.
People are having fun, but then a stranger comes in wearing a mask that looks like death. Everyone is afraid of this stranger and they cannot tell if it's a mask or not.
Prospero tries to attack the stranger and kill him, but shorty after touching the masked stranger, he falls down dead. Then everyone dies. They could not escape or outrun death.