Dungeon's Curse

A young boy moves out somewhere else due to being bullied by a girl.but ends up being neighbours with her. They're parents talk whilst they're left alone to explore the house.They decide to explore the basement wich turns out to be a dungeon.In the dungeon there's something that lures the boy to reveal a portal that's been sealed off centuries ago. with monsters coming into their world.Not knowing what they just did they collapse......