A group of Swedish scientists led by Anna Rosenberg have developed an environmentally friendly car engine. Just before they sign the deal with the big European motor company the test results leak into the wrong hands after a violent intrusion. There seems to be a mole in the team - but who and to whom is he/she really working for? While the research team faces the threat of bankruptcy, Anna Rosenberg has also her private life to sort out.—T.J.A.