Bethany, Martha and Fridge re-enter the game "Jumanji" after discovering that Spencer has been sucked back into it. When Spencer's friend, Milo, and grandfather, Eddie, hear the commotion, they check up on it and end up being unwittingly dragged into the game too. In the game world, the gang realises that the game has changed, even their avatars are jumbled up now. Nothing is what they expect. They will have to brave unexplored arid deserts to snowy mountains to make their way out of the world's most dangerous game.