Ep 18. Land Before Swine

When the Gravity Falls gang decides to go on a picnic, they end up stumbling upon the old Mystery Shack where they come across their former enemy, Gideon. Gideon has now become a fugitive on the run and he desperately seeks help from Dipper and Mabel. He tells them that he has discovered a treasure map that will lead them to an ancient hidden treasure in the forest.

However, things take a turn for the worse when they realise that they are not the only ones on their mission to find the treasure. A herd of prehistoric dinosaurs is also on the hunt and they are not afraid to attack anyone who comes in their way. In order to outsmart the dinosaur herd and find the treasure, Dipper and Mabel turn to Gideon for help as they realise that he might be their only hope to survive.

As they set out on their adventure, they come across various obstacles and challenges along the way. They navigate through dangerous terrain, swim through treacherous waters, and climb up steep cliffs, all while trying to outrun the dangerous dinosaurs who are hot on their trail.

Meanwhile, back in town, Stan is forced to take over the Mystery Shack in Gideon's absence but he soon discovers that running the Shack is not as easy as he thought it would be. His attempts to become a successful businessman are foiled time and again as he struggles to keep the guest entertained and make ends meet.

As the group draws closer to the treasure, they begin to realise that the map might be leading them astray. The group faces a moral dilemma when they question whether or not they should continue their pursuit of the treasure when it comes at the cost of destroying the natural habitat of the dinosaurs. Their decision could ultimately spell doom for them all.

In "Land Before Swine," viewers are taken on an action-packed adventure through the treacherous terrain of Gravity Falls as the group attempts to find a hidden treasure. In addition to the pulse-pounding adventure, the episode also explores the themes of greed and environmentalism as the characters are forced to make tough decisions that will have lasting impacts. Overall, the episode is a thrilling and exciting ride that will keep viewers on the edge of their seats until the very end.