From the Front Cover:
Aleyd Burral, the Risen Hero of Phlan has sounded the call to battle! Intent on retaking her home of Phlan, Aleyd has amassed a surprising amount of support from the citizenry of Phlan, including that of the High Blade himself. But as lofty as her goals might be, the honor-bound warrior seems willing to sacrifice much in her quest—including everything she once stood for. A four-hour adventure for 5th-10th level characters.
From the Introduction:
Welcome to Black Heart of Vengeance, a D&D Expeditions adventure, part of the official D&D Adventurers League organized play system and the Elemental Evil storyline season.
This adventure is designed for three to seven 5th-10th level characters, and is optimized for five 8th-level characters. Characters outside this level range cannot participate in this adventure.
The adventure is set in the Moonsea region of the Forgotten Realms, in the city of Mulmaster.