In 1492 DR, a group of adventurers are approached by a ghost in Candlekeep who urges them to investigate the unsolved, grisly murder of the Yellowcrest family in Waterdeep five years prior. The investigation leads the adventurers to the nearby village of Greenfast, which is plagued by a secretive cult.

The Curious Tale of Wisteria Vale is the script of a play written in Common. It is split up into three acts, telling the story of a heroic bard before he becomes corrupted by evil. A wizard named Ryllia Liadon donated the book to Candlekeep as an entrance gift. She didn't tell the Avowed that the book contains the secret to accessing Wisteria Vale, a magical demiplane created by the Harpers to imprison a bard named Arrant Quill until they could free him from the influence of an evil artifact. The book has been hidden in the Candlekeep archives for three years, but the Harpers have finally discovered a cure for Quill's corruption, and the time has come to visit Wisteria Vale once more.

A book donated to the library-city of Candlekeep details how the previous owner created a mansion in a pocket dimension and what the command word to enter is. The gateway was recently discovered, and the characters need to enter the mansion to retrieve the researcher who rediscovered it.