From the Front Cover:
The Maimed Virulence has come. The future of the Cinnabar Throne and the lives of the denizens of Phlan are in jeopardy. The Cult of the Dragon rejoices, and the Black Fist is powerless to stop them. How will the factions of the city respond to this threat? Can Phlan be saved this time? Part One of Under Emerald Claws. An adventure for 5th-10th level characters.
From the Introduction:
Welcome to Tyranny in Phlan, a D&D Expeditions adventure, part of the official D&D Adventurers League organized play system and the Tyranny of Dragons storyline season.
This adventure is designed for three to seven 5th-10th level characters, and is optimized for five 6th 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 and near the town of Phlan.