When Cynan tumbles happily onto the beach he is dazzled by the sun, sea and space. He soon finds a rockpool full of new friends... but as the sea disappears, they are stranded! Cynan rushes to the rescue and manages to scoop up Little Crab... but do Cynan's new friends really need rescuing? A Welsh adaptation by Anwen Pierce of Fletcher and the Rockpool.

Wth fynd am dro ar hyd y traeth, mae Cynan yn rhyfeddu at yr haul, y môr a'r ehangder. Cyn bo hir mae'n darganfod pwll dŵr yn llawn o ffrindiau newydd ... ond wrth i'r dŵr gilio, cânt eu hynysu! Daw Cynan i'r adwy gan achub Crwban Bach ... ond tybed ydy ffrindiau newydd Cynan am gael eu hachub? Archwiliwch y byd disglair tu hwnt i goedwig Cynan mewn stori dynergalon. Addasiad Cymraeg.