Is Circle A Regularor Irregularshape Childrens Movie From A Long Time Ago About A Kid That Would Travel Off With A Dragon At Night.?

Childrens movie from a long time ago about a kid that would travel off with a dragon at night.? - is circle a regularor irregularshape

Sorry for the lack of precision ... i havent seen since I was like 8 (Mabye) and now in the 22nd The boy went with a dragon in the night and went into the forest ... I think it was a ring of dragons? I know that the boy was with the dragon and with other dragons. This has to b in the 80s, probably the early 90s. Any help is welcome.