World swap (a PJO HoO HP fanfic)

What happens when some wizards wake up at a camp full of people learning about greek and roman mythology and how to fight ? And what happens when some demigods wake up at a pub where some people use sticks to do almost everything , and where you can buy potion that can help you do anything ? This is my first fanfic i hope all of you will like it (pjo/hoo/hp)
Cover by : @yzgheib21