flashbacks

A blonde female character in a black outfit appears in a framed image against a colorful background, followed by a large blue and red Pokémon with a yellow star on its head standing in a grassy area with a wooden structure, then a black and white image of a dog with wide eyes looking at cupcakes, then a black and white Pokémon battle scene where a character named Cynthia sends out a Garchomp, which is shown on the field, and the opponent's Torterra faints, after which the Garchomp uses Earthquake.