Mewtwo Strikes Back is a novelization or storybook based on the first feature-length film in the Pokémon franchise. The plot centers on the powerful, genetically engineered Pokémon, Mewtwo, who, after being created by scientists, grapples with questions of purpose, identity, and the relationship between humans and Pokémon. Mewtwo unleashes its destructive power, setting up a confrontation with the heroic trainer Ash Ketchum and his iconic Pokémon, Pikachu. The story details the dramatic confrontation between the original Pokémon and Mewtwo's cloned counterparts. The book follows the emotional journey of Ash trying to prove that the bond between humans and Pokémon transcends power or origin.