After Isaac is about a teenage boy, Aaron Saturn, who lost his brother to a sudden, unexpected heart attack. Aaron lives day by day, struggling to move on after his brother’s death. Aaron lives the life of realizing that nothing can replace his brother Isaac, and many conflicts occur when the parents are trying to move on. To rebound from the constant thought of losing the youngest son, Aaron turns to rebellion and poor decision making as his sublimation towards his brother’s death.