From publisher blurb:
HOW TO USE THIS SUPPLEMENT
This supplement is intended to be used in conjunction with Supers & Sorcery, an independent setting sourcebook using the Dungeons & Dragons 5th Edition ruleset. While Supers & Sorcery includes many game resources that can broadly cover a wide range of superhero stories and tones, this particular supplement focuses on the sillier aspects of superheroics. Here you can find additional feats, spells, NPCs, items, and a new background that you can slot into Supers & Sorcery games as you like. These can be used for light one-shots and "what-if" adventures between larger, more straightforward arcs; or they can be used to build an entire campaign of bizarrely-themed villains, and heroes who break the fourth wall while swinging magical sharks as weapons.