From publisher blurb:
Now for SUPERS! RED
A savage group of teenaged villains is raiding a long abandoned base of a retired supervillain.
Can your heroes stop them before they unleash a reign a terror with the super-science weapons they'll find there?
Lair of the Wrathmaster is a short, fun, fast-playing scenario that is ideal for a quick evening's entertainment or to drop as a set-piece into a longer adventure.
This adventure takes place in Stark City - but can be used in any setting with little or no adaptation.