Xi Yangyang Yu Hui Tailang: Kaixin Chuang Long Nian
English title: Pleasant Goat and Big Big Wolf: Mission Incredible: Adventures on the Dragon's Trail
Japanese title: 喜羊羊与灰太狼 之开心闯龙年
Type: Movie
Episodes: 1
Source: Unknown
Genres: Adventure, Comedy
Producers: Creative Power Entertaining, Alpha Group
Duration: 1 hr 27 min
Rating: G - All Ages

It is said that there is a thousands years old treasure that must be found before it fall into the wrong hands, and the Dragon flute which only the real descendant of the dragon can open the door of the treasure. It's a race against time and full onslaught of enemies to stop the heroes from there quest.

(Source: AniDB)