Brent Sr. is plotting to test the skills his children have developed in the past few months, from honing defensive techniques to building sustainable food sources and devising combat operations. He's enlisting his friend Military Mike to do a comprehensive walk-through of their work on the castle grounds to determine whether this massive fortress will protect them in a doomsday scenario. Brent Sr. strategizes a mock siege and surgical strike that will put his children to the ultimate test.