In 2019, three years after their adventure in Jumanji, Spencer Gilpin, Anthony "Fridge" Johnson, Martha Kaply, and Bethany Walker lead different lives, but plan a reunion brunch in Brantford, New Hampshire that year. Spencer, apprehensive of the meeting due to depression, contemplates returning to Jumanji where he had purpose, and spends his first night looking over the broken video-game system he held onto. The following day, his friends visit his home, meeting with Spencer's grandfather Eddie, who is recovering from hip surgery, and Eddie's former friend and business partner Milo Walker, who is visiting for an unknown reason. Learning that they have no idea where Spencer is, the group search the house, and find the Jumanji game repaired in the basement. Realising Spencer returned to the game, his friends decide to follow him.