Cyfle i edrych nol ar daith iaith Steve Backshall, Rakie Ayola, James Hook, Chris Coleman, Kiri Pritchard-McLean a Joanna Scanlan.
Football legend Joe Ledley is touring Wales with radio and television presenter Dylan Ebenezer.
Accompanying actress Jessica Hynes along her journey is actress Lisa Palfrey, and there are many challenges from Machynlleth to Llanelian!
DJ and singer Aleighcia Scott takes the language on tour with actress Mali Ann Rees.
Neet Mohan, the actor from Casualty, is taking the language on a tour through Wales with his friend and fellow actor Llyr Evans.
This time former international rugby players and friends Adam Jones and Mike Phillips tackle the Welsh language.
Comedians and actors Jayde Adams and Geraint Rhys Edwards star this time.