George Clooney becomes a hostage on network TV in the first trailer for TriStar Pictures’ “Money Monster.”

Clooney is playing a glib investment guru with the TV show “Money Monster” who has to deal with a gun-toting investor — played by Jack O’Connell of “Unbroken” — after the investor takes a bath on a tech stock.

“Is this a union thing?” Clooney asks when he spots O’Connell’s weapon.

Julia Roberts stars as the producer, who tells the crew at that point, “Anyone who can get out, get out now.”

O’Connell’s character insists later that he’s not to blame, asserting, “I might be the one with a gun here, but I am not the criminal.”

Jodie Foster directed from a script by Jamie Linden and Alan DiFiore & Jim Kouf, based on a story by DiFiore and Kouf. Producers are Daniel Dubiecki, Lara Alameddine, George Clooney and Grant Heslov. Caitriona Balfe, Dominic West and Giancarlo Esposito also star.

“Money Monster” opens on May 13.