Stockholm East is the love story between two strangers, bound together by a tragedy that has taken its toll on both their lives and relationships. When Johan and Anna meet at the railway station connecting Stockholm with the idyllic suburbs where they both live, they embark on a dangerous journey of passion and lies.
The young code breaker Karnell works in the Swedish intelligence service during the Cold War. Having cracked a secret code he is drawn into a conspiracy that stretches throughout the Baltic Sea. It turns out that there is a leak codenamed Ramona within the organization and now they have to stop Ramona before it wrecks havoc.
The kidnapping of a DA's wife, the murder of several minor criminals and the police finding a large stash of weapons is all in a day's work for criminal detective Roland Hassel.