After the first time players defeat the Elite Four, one of the members, Lorelei, disappears. After gaining access to the Sevii Islands, an entirely new region, the player discovers Lorelei in her house and convinces her to come back with them. Once more, the protagonist must thwart Team Rocket's plans on several occasions, recover two artifacts, the Ruby and the Sapphire, and put them in the main computer at One Island. After that, the player can communicate, battle, trade, etc., with "Ruby" and "Sapphire".