Henry is more determined than ever to find proof that Storybrooke is linked to the Fairy Tale world and when a large sinkhole opens up at the mine on the outskirts of town, he sees his opportunity. Meanwhile, Regina has ordered Archie to crush Henry’s notion about Fairy Tale characters immediately, or she will ruin his life. Archie reluctantly tries, but that only spurs Henry into rushing into the collapsing mine! Archie goes in after him and the two are trapped. They barely escape, but Archie finds his courage and his conscience in there, and tells Regina he will treat Henry as he sees fit. Unfortunately what Henry and Archie didn’t find, was a piece of Snow White’s glass coffin, now trapped deep in the Storybrooke mine.