You stolen the crystals but got trapped. You are now released, and find yourself in the enemy stronghold. While you were trapped, you dozed off and while you dozed off, the enemy stolen the crystals. You have no hope but to to destroy every enemy in the stonghold. There is a room there with no enemies whick shows which major people in the stronghold have been defeated or died (Nitro=dead; Acid=alive) and teleports you to their own room. When you have beat them all, you can just wait for the sky to brighten up.