Author: Julie Bertagna; Welsh Adaptation: Elin Meek.

Series: Cyfres yr Hebog.

Dafydd is terrified of riding Mr. Llwyd's Big Ferris Wheel at the local carnival. He is tired of being afraid, so he plans to over come his fear of heights in an extreme way bungee jumping. A Welsh adaptation of Bungee Hero.

Awdur: Julie Bertagna; Addasiad Cymraeg: Elin Meek.

Cyfres: Cyfres yr Hebog.

Mae ofn uchder yn ofnadwy ar Dafydd. Pam ei fod e'n dewis gwneud naid bynji, felly, i godi arian i elusen? Ai stori drist Mr Llwyd sydd wrth wraidd hyn? A fydd e'n ddigon dewr i gymryd y naid?