Within the film’s narrative, the character acts as a steadfast companion to Ash Ketchum. While traversing the dense Forest of Okoya, they cross paths with Koko, a child nurtured by the Mythical Pokémon Zarude. When Koko tumbles into a raging river and sustains injuries, the character swiftly intervenes, rushing him to a nearby settlement for urgent care.

After Koko regains consciousness, the character notes his bewilderment at human surroundings and speech, sparking a determined effort to help him navigate the divide between his wild upbringing and societal norms. Through patient engagement, they forge a unique rapport, deciphering Koko’s instincts and guiding his grasp of human interaction, language, and traditions.

The character plays a key role in pivotal events: quelling a frenzied Drednaw through teamwork with Koko, mediating clashes among wild Pokémon such as Falinks, and safeguarding the jungle’s delicate balance. In the climactic struggle, they join forces with Zarude’s tribe to thwart the antagonist Dr. Zed, dismantling his destructive machinery and defending the sacred Great Tree.

Their actions embody themes of harmony between humans and Pokémon, epitomized through Koko’s struggle to reconcile his human heritage with his primal upbringing. This relationship underscores the narrative’s focus on kinship transcending species, emphasizing empathy and unity in the face of discord.