You can read episode 31 here.
After having their picnic lunch interrupted by some angry Pokémon, Ash and Dashilisk are separated from everyone else. Now they must make it back, but Dashilisk’s carefree and happy-go-lucky attitude seem to be getting in their way.
The Character Guide page has been updated accordingly. Also, in case you haven’t seen it yet, the New Items page has been recently updated with a TM/HM list, and the Attackdex has been updated with the new moves.