New Agents Of S.H.I.E.L.D. Season 2 Preview Rocks Out To Highway to Hell

Marvel has released a brand new 30-second preview for Marvel's Agents of S.H.I.E.L.D. Season 2. The trailer is really cut together in such a way that it really delivers the message that there's going to be a whole new intensity level for Season 2.

Several brief action sequences are show, while AC/DC's Highway to Hell plays in the background. A voiceover states, "What once was S.H.I.E.L.D. no longer exists. But their enemies are still out there. And the world can't save itself."

"This is a make or break moment. I'm going to finish what I started," says Agent Coulson, as played by Clark Gregg.

Marvel's Agents of S.H.I.E.L.D. airs on Tuesday, September 23, 2014 at 9 PM ET.