From publisher blurb:
The adventure Natural Selection works similarly to a haunted house adventure where the PCs are trapped within a certain location. In this case. The players are met with unique challenges, as they are cut off from the outside world with their only ally Agent Wallace locked with them. Unlike other adventures across worlds or space, Natural Selection cages the PCs in small rooms and spaces to do battle. The story unfolds as Mannheim Industries lures Agent Wallace and the PCs to their headquarters where an attack takes place. Once inside the location, Mannheim and [REDACTED] continue with their nefarious plot. The adventure has the heroes trying to escape, while simultaneously not letting something out.
Where does it go from here? You will have to see it! This adventure contains everything you need to know to continue from the previous adventure, Heroes Assemble and Legacy of Heroes, or start fresh adventuring in the Amazing Universe including complete write-ups for villains and dangers that might be faced. Test your heroes' mettle and give your players what they really want-Amazing Adventures!