Episode 1: The Princess and the Shane

Slugterra: Northbound is the sequel series to Slugterra: Twisted Ends
If you have not read the previous book, I heavily suggest you do so to ensure you have all the information you need to continue with this fan season/fan fic.

Season overview:
Episode 1: The Princess and the Shane
Episode 2: Palace Alpha
Episode 3: Ticket to Ride
Episode 4: Hares to Spare