Left on their own for an afternoon, two bored and restless children find more excitement than they bargained for in a mysterious and mystical jungle adventure board game.

Four high school kids discover an old video game console and are drawn into the game's jungle setting, literally becoming the adult avatars they chose.

With the gang spread across the country (and beyond) at college, Spencer is back to feeling out of place, even when he returns home over winter break. Desperate to escape his grandfather who is sharing his room, and to feel confident again, he attempts to fix the broken Jumanji video game, giving his friends no choice but to level up and return to rescue him.

Danny twists the key of an old science fiction game. The game unleashes a localized meteor shower and wrenches Danny's house into orbit around a distant ringed planet. Besides Danny, his brother Walter and sister Lisa have to go along. Soon a defective robot, a rangy astronaut, and an alien spaceship enter the picture. The only way the kids can return their house to its proper space-time coordinates is to finish the game, but before they can finish,...