Complex sentence: Coogan discovers the Gestapo are involved in a plan to bomb the United States, and with the puppets' help, Coogan resolves to stop them, and creates a new puppet "Ninja" to aid the others in battle.
Split into simpler sentences: Coogan discovers the Gestapo are involved in a plan to bomb the United States, and with the puppets' help, Coogan resolves to stop them. Coogan creates a new puppet "Ninja" to aid the others in battle.