Cleaning Up the Cult (14 pages at Dungeon Masters Guild) is a fun fantasy adventure for Fifth Edition which takes place along The Sword Coast. This adventure is for 15th level characters, but I transformed it to a level two adventure . To create my solo engine, I changed four lines in Hoard of the Dragon Queen. I used my six second level characters.

So, my characters wanted to do some sightseeing and pick up some souvenirs by following the path the heroes of the land took when they were hunting for dragons. They travelled by cart from Waterdeep. On the seventh day they did have to battle lizardfolk. On the evening of the 10th day, they reached the Carnath Roadhouse. On the 12th day they reached a settlement which used to be a lizardfolk village. At the beach they fought bullywugs. Next, they were in a boat when it was attacked by a crocodile. The druid Luna was knocked into the water. She changed into a fish and was able to escape the croc.

When they reached Castle Naerytar, they could see two human guards up above the gate. The PCs destroyed the gate and were then in combat with four guards. In the Outer Ward they had to deal with a giant lizard and a lizardfolk. In the Inner Ward they fought an Ambush Drake. They continued to explore and killed several dragonclaws. In the kitchen, they rescued ten commoners. They immediately took them back to the Roadhouse and sold the books they had found. They rested at the Roadhouse on the 13th day, but that evening six kobolds stole some chickens from the chicken coop. The PCs killed the kobolds. On the 14th day they continued to explore Naerytar. In the Great Hall they killed a Dragonwing and found the treasure room. They packed up the loot from this room and twelve expensive bottles of wine from the storage area. They headed back to the Roadhouse, sold their wine, and had a long party. Give this a try!