You end up captured in a pirate's den, about an inch tall. The only way to get back to normal size is drinking from a greenish solution that's on the other side of a table. To get there you have to fight bugs, toads, and birds the (relative) size of dragons. The sense of scale and size is pretty well done, climbing on books, walking around giant coins and chess pieces.
Here's a video with a female character, from the start until about 5m28s, when she finds a drop of the growing solution and gets back to her normal size:
https://www.youtube.com/watch?v=SLnrxD_sk3k
