Macsen is a happy little chap, but sometimes, even the happiest of chaps get worried or nervous, and when this happens Macsen's tummy starts to hurt. Follow the journey of Macsen as he learns about his anxious thoughts and feelings, where they come from and how to control them.

Croeso i fyd deiliog Macsen! Dilyna Macsen bach ar ei daith wrth iddo ddod i ddeall ei deimladau a'i ofnau drwy ymarfer meddwlgarwch. Trwy gyfrwng lluniau lliwgar a mydr ac odl chwareus, gallwn weld sut gall meddwlgarwch fod o les i ni, a sut y gallwn ei ddefnyddio i dawelu'n meddyliau prysur.