Warden Ingo of Pearl Clan has no memories. He doesn't know who he is, where he is from, or why he was in Hisui to begin with. All he knew was that he fell into the Hisui region through a rift in the sky. After two years without any answers pass by he begins to think he will never regain his memories. However, right when he begins to lose hope you fall from the sky and crash land right into his life. Upon your arrival bits and pieces of his memories start to return, and the more time he spends with you the more he remembers. As for you with Ingo by your side you feel a bit less alone in Hisui, and having a partner with you makes you feel like you might actually be able to complete the mission Arceus gave you to catch all Pokémon. While it's a long shot if the two of you work together and stay on the right track you might be able to help Ingo regain his memories, catch all of the Pokémon in Hisui, and hopefully find a way to return home together...
3 parts