Death Jr.

The teenage son of the Grim Reaper, DJ, has been given one final chance to keep out of trouble at school or he'll be shipped off to a military academy. When DJ and his new friends go on a field trip to a museum, DJ opens a locked box to impress Pandora. Predictably, all hell breaks loose and demons run amok. DJ now has to stop them and return the town back to normal before his dad finds out. Source: Wikipedia, "http://en.wikipedia.org/wiki/Death_Jr", available under the CC-BY-SA License.