“Freezing a Mother-in-Law” is a 19th-century comedy about a man named Walter Litherland trying to save his mother-in-law, Mrs. Watmuff, from a dangerous experiment. A relative has discovered a fluid that, if injected into the ear, can freeze or suspend the subject's animation, and it is to be tested on Mrs. Watmuff. When Walter learns about this plot and that even his father-in-law is an accomplice, he does everything to save his mother-in-law from the danger.