Movement 20: The Letter in The Sewers | The Quest for The Best Song

With four shrinking potions successfully brewed, our heroes venture into the labyrinth of sewers beneath King's Point in search of this mysterious grandma's letter they keep hearing about. However, in order to find the letter, they must first eradicate the city's rat infestation while under the influence of Al-Khemist's... slightly unpredictable potion. What strange scenes will Willub, Glonk, Seth and Crispin discover beneath the busy city? And what information could possibly contained ...