After Ash and Kiawe tell everyone of their encounter with the old man at the Ruins of Hope, Hapu tells them that the Island Guardian of Poni Island has a special power which allows people to see and meet with loved ones that have long since passed from this world; hearing this, Mallow gets really upset. When the gang visit Hapu at her house, a mysterious mist comes from the Ruins of Hope. Ash, Mallow, Lillie, Gladion and their Pokémon try to make their way through it, but while Ash and Mallow each encounter a beloved figure from the past, Lillie and Gladion’s search is in vain. Hapu goes to the Ruins of Hope to get Tapu Fini to stop, but ends up with an encounter of her own. (Source: Wikipedia)