Beyond the Material Plane, deep into the elemental planes of chaos, a disturbance has occurred. Somewhere between the Plane of Water and the Plane of Earth, a foul land lies. Slime, oozing masses, foul creatures made of gelatinous goo. This is the Plane of Ooze. It is a realm full of brainless, formless aberrations. But suddenly, from the depths of pure ooze, an intelligence rises. The oozes have begun to evolve. They are becoming intelligent, gaining humanoid forms. They are seeping into the Material Plane, plotting the downfall of mankind and the rise of Juiblex.
A 4-hour adventure for 1st-level players.