David Da-Wei Horowitz has a lot on his plate. Preparing for his upcoming bar mitzvah would be enough work even if it didn't involve trying to please his Jewish and Chinese grandmothers, who argue about everything. But David just wants everyone to be happy.That includes his friend Scott, who is determined to win their upcoming trivia tournament but doesn't like their teammate -- and David's best friend -- Hector. Scott and David begin digging a fallout shelter just in case this Cold War stuff with the Soviets turns south... but David's not so convinced he wants to spend forever in an underground bunker with Scott. Maybe it would be better if Hector and Kelli Ann came with them. But that would mean David has to figure out how to stand up for Hector and talk to Kelli Ann. Some days, surviving nuclear war feels like the least of David's problems.