SKY BLUE (which is also known as Wonderful Days) was entirely developed in Korea. A combination of traditional hand-drawn animation, computer graphics and miniatures. Touted by many as the "best Korean anime ever" it is an extremely ambitious movie.

The premise is that civilisation has been obliterated by war and pollution, only a shielded city named Ecoban survives.  Ecoban is under military control and its people have never seen a blue sky.  Jay, one of the leaders of a security unit, was told when she was a child by her first love, Shua, that one day they would see a clear blue sky. Now, years after his supposed death, he returns to Ecoban as part of a terrorist organisation known as the Hot Dogs, determined to fulfil his promise.