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The screenplay for this animated feature film takes as its inspiration a Celtic text called Y Mabinogi ('tales of young men'). The film starts in live action where we meet contemporary Welsh teenagers.

On his eighteenth birthday Lleu's world is shaken by the news that he is adopted. On the same day, his friend Rhiannon thinks that she may be pregnant, and Dan, who lives in his big brother's shadow, is as scatty as ever.

They all put their problems aside for the day when they come together to celebrate Lleu's birthday. Venturing on a boat trip along the Welsh coast they suddenly see a change in the water. They realise that, on May Eve, they have found the golden gateway to the OtherWorld, which can be seen shining deep beneath the waters.

Being an independent and stubborn girl, Rhiannon doesn't think twice before plunging into the sea, and the other two are not far behind. As they swim deeper and deeper and get closer and closer to the golden gateway, they are transformed into animated characters, and transported back many centuries to the Celtic world of the Mabinogi.

But Rhiannon, Manawydan and Lleu Llaw Gyffes have their own Sixth Century problems! Rhiannon is being forced to marry someone she doesn't love, Manawydan is trying to make things right after his brother's malicious and violent scheming, and Lleu is trying to come to terms with his mother's rejection of him.

While trying to overcome these problems, the characters have to deal with the conþict between fate, personal choice and magic. Alongside this we have scenes of vast battles and gritty man-to-man fighting in an action-packed story of ancient Celts in a dangerous and sometimes magical world!


Type of film
Running Time
104 mins
35mm, Kodak
Derek Hayes
Christopher Grace
Executive Producer
Christopher Grace
William Oswald
Martin Lamb, Penelope Middelboe
Peter Jeffreys, Ian Banks
John Cale
Principal Cast
Daniel Evans, Jenny Livsey,Matthew Rhys, Ioan Gruffudd, Philip Madoc

Production Company

Cartwn Cymru
Ben Jenkins Court, 19a High Street
Llandaf, Cardiff CF5 2DY, Wales

T +44 (0)29 2057 5999
F+44 (0)29 2057 5919


S4C International
50 Lamborne Crescent
Llanisien, Cardiff CF14 5WJ, Wales

T+44 (0)29 2074 1356
F+44 (0)29 2075 4444