A mysterious box arrives at the door marked OPEN IN CASE OF EMERGENCY. That sure is handy for Zachary J. Warthog. Need a packet of sugar? Just open the box and it's there! Clean underwear? Check.
Cyrus P. Rhinosaur gets a box, too. When he has real and true emergencies, like a tornado that hits his house, he decides to save the box for an even bigger emergency.
When Zack loses his box, suddenly -- a real emergency! But no box to open...
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