It's senior year for Team Phantom at Casper High, and Danny's secret identity is still a secret. Thinking it's a good idea, Jack, Maddie, and Mr. Lancer decides to take the class to the ghost zone. Will any of Danny's friends (both human and ghost) get hurt? Will there be a new member of Team Phantom? Will his secret be revealed? Or will everything fall apart? *After Ultimate Enemy* *No Phantom Planet*