However, I've had some fun trying to boil the plays down to their essences. A Shakespeare play in a nutshell is, essentially, a logline - it may not tell you very much about the characters or the rising action, but it describes the most fundamental part/s of the story.
So, here's the turn of The Comedy of Errors.
Two sets of identical twins, who were separated at birth, find themselves in the same city. Unaware of their brothers' existences, they wreak unintended havoc among their friends and families.
If you'd like to see other Shakespeare plays shoved into a nutshell, take a look at All's Well That Ends Well and As You Like It.