Alec and the Mirthworms

Alec and the Mirthworms is the 12th episode of the 4th season of Welcome to Wellland. It premiered on December 21, 2017 on CTV in Canada and on CBS in the United States. The episode is a collaboration between the series and the often-forgotten Mirthworms specials.

Summary
Left stranded in the woods after his beetle breaks down, Alec comes across the jovial Mirthworms, but learns about the outcast Bert Worm.