London Has Fallen

The British Prime Minister is submitted to a surgery and passes away of heart attack during the recovery. The leaders of the great nations must attend his funeral without a preparation of a security scheme by their secret services. The American President Benjamin Asher travels under the protection of Agent Mike Banning, who is responsible for his security. On the arrival at the St Paul's Cathedral, the leaders and the public in general have a massive attack from terrorists disguised as guards and police officers. Mike and the president succeed to flee, but soon they realize that there is no one is trustworthy. The terrorist leader promises to execute the president live for the whole world. Meanwhile the New Scotland Yard leadership comes up to the same conclusion and they activate the alarm system in the city to remove the real police officers from the streets to know who the terrorists are. Further, there is a high-level traitor in the Secret Service. Who might be the traitor? What will happen to the president and Mike?