Owain Morgan is having a busy term at school, full of challenges posed by friends, school work and rugby! He is chosen for the Younger Cup team, which is hard work. In addition, there is trouble in the pupil's dormitory as mobile phones are lost. Once again, Owain finds a new ghost, but whose shirt will it be donning this time? A Welsh adaptation by Gwenno Hughes.

Mae'n ddechrau tymor arall yng Ngholeg Craig Wen ac mae Owain yn ei ôl. Bellach, mae'n ymarfer gyda thîm y Cwpan Iau sy'n waith caled. Ond, mae ysbryd arall yn cadw cwmni iddo. Doedd gan Owain ddim syniad am y cysylltiadau Cymreig rhwng Cymru a Rhyfel Cartref Sbaen nes cyfarfod Sam ... Addasiad Cymraeg gan Gwenno Hughes.