From the introduction:
This adventure can be can be easily customized to a party of any size or level, or run as a level 2 adventure for 5 players. It can work as a small side adventure in an existing campaign, as a standalone one-shot, or the start of a new adventure. Use the links to the tools in their relevant section to customize the adventure to your party.
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A criminal syndicate of lizardfolk have pulled off a daring heist: stealing the egg of a gold dragon. Their plan was going off without a hitch, all that remained was to raise the dragon in secret until they had an unstoppable ally. That is, until a group of fey appeared and then disappeared with the egg in tow, retreating to their home in The Underbog: a secret trench underneath the roots of a great forest. In retaliation, the lizardfolk have launched a full-scale invasion of the fey, and the resulting clash of the monstrous factions has made the once peaceful forest into a warzone. The Order of the Broken Hooves, lead by a gold dragon in disguise, wants the egg recovered and hostilities ended.