Eureeka's Castle
Wide Awake at Eureeka's Castle (1x1)
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The main plot is Magellen (a dragon who has a tail with a mind of its own) and Batly (a near-sighted bat; my personal favorite), challenge each other to a contest to see who can stay awake the longest. Eureeka later joins the contest, and they all share stories of when they couldn't go to sleep other nights.