MindOpus: Ghostly Mystery at the Citadelle

One of the Citadelle’s captains has found a medal he does not recognize… Try as he might, he cannot identify it. He brings it back to his house to continue his research and, overnight, the medal starts emitting a strange energy. This creates a rift between the world of the dead and our own. Three historical figures with ties to the Citadelle have crossed into our world and taken the appearance of ghosts to haunt the fortress! Each of them is kept there by two objects they hold dear, but the ghosts will need help to find them and thus return peacefully to their world.