If Hollywood is looking for a “Snakes On A Plane” sequel, this could be it.

Passengers on a British Airways flight were forced to call Samuel L. Jackson endure a four-hour delay after a mouse was discovered on a San Francisco-bound airplane on Wednesday.

The crew told travelers that they could not take off from Heathrow Airport in London with the critter on board.

Travelers did their best not to feel too trapped by the mouse.

“It’s clear the mouse can’t enter U.S. airspace without a passport,” passenger Annina Salven told Reuters.

Mark Watt, who said he was also headed for San Francisco, shared his feelings on Twitter.

Just had my flight to SFO cancelled because of a mouse on board the plane. Could it not get a visa?? #britishairways — Mark Watt (@markwatt) March 1, 2017

“We know almost everyone wants to fly with us to San Francisco, but on this occasion there was one very small customer who we had to send back to the gate,” British Airways said in a statement, according to the BBC.

Eventually, the plane was ready for takeoff.

“Everyone with two legs is now on their way to California, and we are sorry for the delay,” the airline added.