I got this idea when I was joking around with a friend about a fanfic that would encompass multiple different fandoms, making a crossover with at least 5 different elements. The idea is rather chaotic and may seem kind of stupid, but I think that if written properly, this can turn into a really nice fanfiction. DON'T HATE ME PLEASE.

Short plot: All around the world, the evil organizations won while the good guys lost. A majority of the good guys were taken hostage, but a few from each side managed to escape. Percy Jackson, Harry Potter, Carter and Sadie Kane, The Avengers, and the DC Superheroes manage to escape being enslaved by the combined forces of Steppenwolf, Loki, Apophis, Gaea, the titans, and giants, and other evil entities. While on the run, they all cross paths and decide to work together to free their comrades and fight against the council of evil.

Long Plot:

Apophis won the battle in Ancient Egypt. All magicians were taken hostage and kept in prisons around the world. Only Carter and Sadie manage to escape and go into hiding.

In New York, Gaea, the giants, and the titans defeat the gods and demigods, who are all locked up in their own prisons. Only Percy escaped.

In California, Krios destroyed Camp Jupiter with the help of Polybotes. Only Jason escaped while the rest are taken captive.

In the UK, Voldemort won the wizard war and enslaved the entire population, even muggles. Only harry escaped and went into hiding. The other wizards were forced to join the death eater ranks or were thrown into Azkaban and other wizarding prisons.

The Avengers were defeated by Loki and his army, while Steppenwolf defeated the DC Superheroes. Only Iron man and Batman escaped and went into hiding.

Now while on the run, Percy, Jason, Harry, Carter, Sadie, Ironman, and Batman all meet up. Realizing they have the same goals, they come together and decide to team up against the council of evil. They build a base in a small secluded area, with traps as well as magical enchantments to prevent their base from being found. After training together for a year, they feel that they are prepared and decide to finally start planning against the council of evil.

Storyline: The characters that escaped travel from place to place recruiting other survivors and freeing whoever they can, and train them all in an effort to build up an army. When they feel that they have enough, they storm each of their prisons one by one, freeing whoever they find and training them as well. Towards the end, everyone has been freed and trained and they'll have a final battle with their armies against those of the council of evil. The gods will also have been freed and they will all join the fight as well.