Dr. Stefanie Löcker finds the body of Gerhard Zeidl during her Nordic walking tour – he sits half-burned in a car, a diamond lies under his seat. Zeidl, a salesman in a jewelry store, had been missing for several days, and his boss Walter Gatterer accuses Zeidl of theft because cash, gemstones, and all jewelry have disappeared from the store's safe. The victim's ex-wife reportedly does not know anything wrong, nor does their son Joel. Nevertheless, the SOKO team does not let go of the suspicion that the marriage was not yet completely over. And: Where is the cash and the rest of the jewellery now?