The story begins with the fact that an experienced private investigator Harry Goodman disappears under mysterious circumstances, and his 21-year-old son Tim (justice Smith) begins his own investigation of the incident. He comes to the aid ex-partner Harry Detective Pikachu (Ryan Reynolds) is amusing and charming supersiski is the funny one, able to enter into a stupor even himself. Finding that they get along well, Tim and Pikachu become partners in this exciting adventure. Following the clues they discover on the neon streets of rhyme city (a huge modern metropolis where humans and Pokémon live together), they encounter a variety of creatures and uncover a shocking conspiracy that could disrupt the peaceful coexistence of the two species and end the entire pokémon universe.