Julie, an American on vacation in Mexico, spots a giant, one-eyed amoeba rising from the ocean, but when she tries to tell the authorities, no one believes her. She finally teams up with a marine biologist in an attempt to destroy it.

An immigrant coal miner finds himself in the middle of a bitter labor dispute between the m.77mi.cc workers and the mine owners.

A mother from Arkansas is very possessive of her grown son. To prevent him from getting married she has him drafted into WW I.

The Marx Brothers take on high society and the opera world to bring two lovers together. A sly business manager and two wacky friends of two opera singers help them achieve success while humiliating their stuffy and snobbish enemies.