Mr. Popper, a painter of modest means, dreams of taking an Antarctic adventure. So he’s thrilled when a penguin named Captain Cook waddles out of a mysterious box left on his doorstep. Support American Theatre: a just and thriving theatre ecology begins with information for all. Please join us in this mission by making a donation to our publisher, Theatre Communications Group. When you support American Theatre magazine and TCG, you support a long legacy of quality nonprofit arts journalism. Click here to make your fully tax-deductible…