The fourth season sees the Wattersons dealing with more mature themes, such as bullying, social media, and crushes. This season consists of 25 episodes and includes episodes like "The Breakout" (Episode 1), "The Dinosaur" (Episode 5), and "The Girlfriend" (Episode 14).
Midway through, the "Watterson Luck" is established as a literal force of nature. We see glimpses that the world is slightly "off" (e.g., the introduction of characters like Rob as a background nobody).