The Story of Zero Crystal
The Operatives from the parallel world have stolen one of the Professor's Zero crystals and now they can build their own portals. Their aim is to invade all the parallel worlds and turn them into their slave conclaves. The Operatives should be stopped.
The Professor's rangers have managed to obtain the safe in which the Operatives kept the stolen crystal. It's now your task to extract the crystal from the safe. Hurry! The time is short, because the Operatives are looking for the safe everywhere, and they might be on their way to you already!