Folly Undone

Publisher's blurb:

A 4-Hour Spelljammer adventure, playable by D&D Adventurers League Forgotten realms characters levels 11-16. Twilight Moonsong, a sage of Candlekeep and a resident expert on the studies of the Astral Plane, has noticed strange disturbances in the Astral Sea, the likes of which are similar to the Spellplague. Fearing that her observations are true, she calls on the Harpers to assemble a group of hardy adventurers to investigate the anomaly for her.
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Folly Undone is a four-hour Exploration and Combat heavy experience for characters of level 11-16. Optimized for APL 13. The sequel to WBW-DC-PHP-POLAR-01: Snow Ice, this adventure continues the story of Ermyar Billithros and his efforts to revive his beloved Sage Meyvre.