As Fletcher looks up at the night sky, the stars flicker out, one by one. Soon, instead of a starry sparkle, there is... nothing! Fletcher sets out to help the stars shine again, but as he and Badger race through the winter woods, they find it's not easy to reach the stars... and help can come from unexpected places.

Wrth i Fletcher edrych ar y sêr yn y nos, mae pob seren yn diffodd, fesul un. Cyn bo hir, yn lle disgleirdeb serog, does... dim! Mae Fletcher yn penderfynu mynd ar daith i helpu'r sêr i ddisgleirio eto, ond wrth iddo ef a Badger rasio drwy'r coedwigoedd gaeafol, sylweddolant nad yw hi'n hawdd cyrraedd y sêr... ac y daw help o lefydd annisgwyl.