Complex sentence: He gets an idea and sneaks out of the sewers to Harold Lillja's laboratory, where he activates an experimental multiversal teleportation system to send a message to the Dark Knight, hoping to learn some wisdom from him.
Split into simpler sentences: He gets an idea and sneaks out of the sewers to Harold Lillja's laboratory. He activates an experimental multiversal teleportation system to send a message to the Dark Knight, hoping to learn some wisdom from him.