Complex sentence: Tom explains with him before he ripped the certificate and Jerry signs it, but Tom misses a deadline and falls down to a hole when the escalator's disappeared that directly leads to Hell where he will be tortured by the devil.
Split into simpler sentences: Tom explains with him before he ripped the certificate and Jerry signs it, but he misses the deadline and the escalator disappeared. He then falls into a hole that directly leads to Hell where he will be tortured by the devil.