Gravity falls follows twins Dipper and Mabel Pines as they spend a summer with their great-uncle Stan in the mysterious town of Gravity Falls, Oregon, where they uncover supernatural creatures and a hidden world of anomalies by finding a cryptic journal. The series blends comedy and mystery, with the siblings, their friends Soos and Wendy, and their con-artist uncle battling monsters and a demon named Bill Cipher to understand the town's secrets and save the world. The show is praised for its complex lore, well-crafted characters, humor, and suspenseful story.   

• Arrival and Mystery: 

  Dipper and Mabel arrive at their Great Uncle Stan's tourist trap, The Mystery Shack, in the seemingly quiet town of Gravity Falls. 
• The Journal: 

  Dipper discovers a mysterious journal filled with notes and drawings about the town's strange and supernatural phenomena. 
Uncovering Secrets: 
As the twins work at the Mystery Shack, they encounter various creatures and anomalies, such as gnomes, wax figures, and the manipulative psychic Gideon. 
The Author: 
Dipper becomes determined to find the author of the journal, leading them to discover a hidden bunker and a secret society dedicated to covering up supernatural events. 
Bill Cipher and the Portal: 
The trio learns that Grunkle Stan built a machine that reveals his long-lost twin brother, Stanford, who created the journals. The main villain, the dream demon Bill Cipher, emerges as a major threat. 
Climax and Resolution: 
After a chaotic event known as Weirdmageddon, the twins and their friends work together to defeat Bill Cipher, saving the world and restoring order to Gravity Falls.