Complex sentence: Dingo meets up with Leo again and they travel to Aumaan, where they battle what they think to be Anubis, but it is later revealed to be a decoy with Ken inside.
Split into simpler sentences: Dingo meets up with Leo again, and they travel to Aumaan. Once there, they battle what they think to be Anubis, but it is later revealed to be a decoy with Ken inside.