Lydia has to write a report on Shakespeare, but can't seem to understand Shakespeare's work, so Beetlejuice takes her to the Neitherworld to meet Shakespeare's characters, who capture Lydia and demand that she write new plays for them to act in. Beetlejuice rescues her and takes her to see Shakespeare, who is suffering from a massive Writer's Block and hasn't been able to come up with new play ideas in over 400 years...
—Tony Scheinman