Charlie and the Chocolate Factory (musical) the Teavees board the S.S. Wonka, a bathtub-shaped boat, and travel through an underground river deep below the factory. Charlie and Grandpa Joe, who were too slow to catch the boat, are forced to swim behind them wearing scuba helmets. Wonka leads them into the TV room, much to Mike's delight. Wonka demonstrates Chocolate Television, which uses a machine to send chocolate bars to TV screens. Mike's obsession with electronics overcomes him and, despite his mother and Wonka's protests, he uses the machine to teleport himself into a television set. However, they cannot locate him on the usual channel, so
Charlie and the Chocolate Factory (film) to help Wonka confront and reconcile with his estranged father; Wonka finally realizes the value of family, while his father learns to accept his son for who he is, and not what he does. In the end, Wonka finally allows Charlie's family to move into the factory. Author Roald Dahl disapproved of the 1971 film adaptation and declined the film rights to produce the sequel, "Charlie and the Great Glass Elevator". Warner Bros. and Brillstein-Grey Entertainment entered discussions with the Dahl estate in 1991, hoping to purchase the rights to produce another film version of "Charlie and the Chocolate Factory".