PokÃ mon Mystery Dungeon : Explorers of Time and PokÃ mon Mystery Dungeon : Explorers of Darkness are a the sequel to the PokÃ mon Mystery Dungeon : Blue Rescue Team and Red Rescue Team games . PokÃ mon Mystery Dungeon : Explorers of Sky is the fifth installment in the PokÃ mon Mystery Dungeon series for the Nintendo DS , and a sister game to PokÃ mon Mystery Dungeon : Explorers of Time and Explorers of Darkness .