The story begins with a romantic love affair. The two protagonists come from completely different worlds. One is Danny (Ben Whishaw), who once indulged in sensual pleasures but now is alone and longing for true love. The other is Alex (Edward Holcroft), a mysterious and taciturn spy at the British MI6 headquarters. Even though their backgrounds and personalities are very different, the two spent the best time together. However, the romantic love story did not go smoothly. Soon after, Alex mysteriously disappeared. Danny began to track down step by step. One mysterious clue after another led him to a terrible fact that suffocated him. He found himself involved in a complicated and crisis-ridden spy world. Can he fight this powerful opponent to the end and find out the truth on his own?