A groovy frog is forced to cut short his boogie session as a foul fog engulfs his swamp. Dusting himself off, he soon breaks out the hippity-hop in the fen, only to find the wetlands awash in stinky sewage. As Frog keeps bounding from place to place hoping to find somewhere to call home, he starts to feel hopeless. Will Frog ever find a home away from all the fumes, litter and sewage?

Mae broga heglog yn gorfod dianc o'i gors wedi i gaddug brwnt gloi ei gors. Mae'n crwydro ar draws y tir corsiog, ond mae'n darganfod bod y gwlyptir yn llawn carthffosiaeth ddrewllyd. Wrth iddo sboncio o le i le yn ceisio darganfod cartref newydd, mae Broga'n dechrau teimlo'n ddigalon. Tybed a fydd yn darganfod ei ffordd adref gan ddianc o'r holl fwg, sbwriel a charthffosiaeth?