The movie is a sequel to the 2017 movie 'Jumanji: Welcome to the Jungle' and the fourth installment of the Jumanji franchise.
Unknown to his friends, Spencer kept the pieces of the Jumanji video game and one day repaired the system in the basement of his grandfather's house. When Spencer's friends Bethany, Fridge, and Martha arrive, they find Spencer missing and the game running and decide to re-enter Jumanji to save him. Spencer's grandfather, Eddie, and his friend, Milo Walker, hear the commotion and inadvertently get sucked into the game too. The teenaged friends must help Eddie and Milo get used to their in-game avatars, get them to help find Spencer, and escape Jumanji once again.