Dipper discovers that he is an entire millimeter shorter in height than Mabel, so he tries to find a way to increase his height. Meanwhile, Gideon makes several attempts to gain ownership of the Mystery Shack, each ending in failure, until he sees Dipper and Mabel fighting over a crystal that can make objects shrink and grow, and uses it to shrink them.
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Gideon makes a goal to take the Mystery Shack. See more