Complex sentence: After interrogating Weaver, Mandible learns that Z is looking for Insectopia and sends Cutter to retrieve the Princess and kill Z. Later that night, Z gathers more stuff to burn at the fire while Cutter arrives in Insectopia.
Split into simpler sentences: After interrogating Weaver, Mandible learns that Z is looking for Insectopia. Knowing of the place's existence, Mandible sends Cutter to retrieve the Princess and possibly kill Z. Later that night, Z gathers more stuff to burn at the fire while Cutter arrives in Insectopia.