From the Publisher:
An army on the move, an ancient artifact, its purpose long forgotten, and the sinister plans of an unknown foe: When these elements combine, it's bad news for the good-aligned cities of the Blood Plateau. A massive band of orcs is marching on the Monastery of the Yellow Lotus, intent upon taking the "Flower That Does Not Bloom." The heroes must trek through goblin-infested tunnels and monster-filled woods ahead of the orcish horde, in a deadly Race to the Yellow Lotus.
Race to the Yellow Lotus is a d20 System adventure suitable for characters of 4th-5th level.