"On My Block: Season 4" is the final season of the coming-of-age series that follows a group of friends navigating the challenges of adolescence in a rough neighborhood. The season focuses on the characters' growth as they face new obstacles, including relationships, personal struggles, and the looming prospect of high school graduation. The main characters, including Monse, Jamal, Ruby, and Caesar, confront their past decisions while trying to secure their futures. As they deal with themes of friendship, loyalty, and change, the season wraps up their stories, providing closure to fans of the series.