Invasion: Earth

An unidentified flying object is tracked over the North Sea moving at an otherworldly speed. Royal Air Force pilots are called in to intercept and identify the craft and mistakenly shoot it down. The ship crash-lands in the Scottish Highlands as soldiers and scientists scramble to its resting place. With the aid of skilled scientists and an intercepted message, the groups learns that Earth is unwittingly caught in the crossfire of an intergalactic conflict...