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.
Beakman explains what the heart is and how it works using a model and an animated clip. He shows how it contracts to move blood around and that the blood carries nutrients and oxygen to all of your cells.
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.
This catchy song introduces the viewer to the circulatory system and explains its basic function: to circulate blood. It also covers the four chambers of the heart.