Elfangor warns them to never stay beyond two hours in a morph, or they will be trapped in that form forever. The Yeerks, led by Visser Three, arrive to kill Elfangor and eliminate all traces of him and his ship.
Elfangor advises against prolonged morphing, as it could result in a permanent state. The Yeerks, under the leadership of Visser Three, are tasked with eliminating Elfangor and all evidence of him and his ship.