-( Story related, cannot be missed )-
Upon starting the game, you will find a quick re-cap from the previous game and how it leads into this (involving the Zoni). When you're able to control the character, run through Sector One following the tutorial sections given to you by the Caretaker. By the time you see him physically, he will be isolated in the room (a broom closet) and he will ask you to stop them from getting to him. Proceed further on to finish the level and continue the story.