Jerry, Elaine, and George are eating at a restaurant, and George claims he is having a heart attack. Jerry and Elaine don't believe him, especially because his claims of being in a dire situation in the past were invalid. After some time, they realize he is actually suffering and call for help.
Beakman explains why we have a heart and uses some short clips to show what a heart is and what it does. Then he uses and clogged sink to explain what a clogged artery is and various ways to fix it. He covers an angioscope and heart bypass surgery.
Neil and Shaun use augmented reality (AR) to practice a cardiac surgery on a patient's heart and find a scenario in which he would survive. They find a solution with an exceedingly low margin of error.