The plot of the latest Ajay-Priyan flick is a copy of Speed, a rip-off of The Bullet Train

Slow down and you die. Now where have we heard that plotline before? At least three films that involve rapid transit systems have something to do with a bomb that will be triggered if the speed falls below a certain level.

While Priyadarshan's next Tez has a plot that reminds one of Keanu Reeves starrer Speed, the American blockbuster itself was a rip-off of a 1975 Japanese flick called Shinkansen Daibakuha (The Bullet Train).

While Shinkansen... had the action take place on a train, Speed suffered the same fate on a bus: there's a bomb on board that will go off if it slows down.

Tez, which is being shot in London, goes the same route as the original film.

A source reveals that the Priyan flick will be an out-and-out actioner, "Ajay Devgn plays a terrorist who puts a speeding London-Paris train in harm's way.

A bomb he plants will explode if the train's speed slows down. Anil Kapoor, Kangana Ranaut and Sameera Reddy are the passengers on the train who try to come up with a way to save people on board."

The Bullet Train was a huge success in the late 70s. It spawned a series of Korean and Japanese films with similar plots. Speed was one of the biggest blockbusters the year it released.

Tez will have scenes shot on the Eurostar, a tube that connects London to Paris.

"The climax of Tez is similar to The Bullet Train where passengers will try and save their lives by stopping the bomb from exploding.

Priyan wants to keep the length of the film tight and won't have more than two songs in the film."

Other copies of 2010

Bum Bum Bole (2010) - Children of Heaven

Aakrosh (2010) - Mississippi Burning