Greg Heffley's on a losing streak. His best friend, Rowley Jefferson, has ditched him, and finding new friends in middle school is proving to be a tough task. To change his fortunes, Greg decides to take a leap of faith and turn his decisions over to chance. Will a roll of the dice turn things around, or is Greg's life destined to be just another hard-luck story?

Mae'r dripsyn, Greg Heffley yn anlwcus iawn. Mae ei ffrind gorau Rowley Jefferson wedi troi ei gefn arno ac mae dod o hyd i ffrindiau newydd yn yr ysgol yn anodd iawn. Mae Greg yn penderfynu mentro a seilio ei benderfyniadau ar 'siawns'. Ydy lwc Greg yn mynd i newid neu a fydd yn anlwcus unwaith eto? Addasiad Cymraeg Owain Sion o Diary of a Wimpy Kid: Hard Luck, Jeff Kinney.