How bad is it? It's a poor sequel to an already questionable film.
Should you see it? Nah.
Nic Cage does his over-the-top best to keep this film moving - and watching him pee fire is amusing - but this film looks like it was cobbled together quickly to cash in on the surprise success of the first Ghost Rider film. The plot, such as it is, is stupid and not worth explaining, as the film exists solely for CGI effects and stuff getting blowed-up real good (as Billy Sol Hurok might say [look it up]). The dialogue has some real howlers and it's always good to see Idris Elba and Eva Mendes. I'm including this film because there's a possibility it might develop a cult so-bad-it's-good following someday, though it's really like an overlong music video.