Complex sentence: In "The Invasion," Raph brings a photo of Spike as the one thing to save from the lair before it is destroyed and hopes that Slash survives the invasion of the Kraang.
Split into simpler sentences: In "The Invasion," Raph brings a photo of Spike as the one thing to save from the lair before it is destroyed. He hopes that Slash survives the invasion of the Kraang.