A US Congress committee arrives in post-war Berlin to access the morale and behaviour of the troops. In the party is a stiff, by-the-book Iowa congresswoman who uses any opportunity to put down the US troops. She discovers that a German nightclub singer has Nazi connections and should be in jail but for a connection in the US Army. She enlists the help of an army captain to track down the connection, little knowing that he is in a relationship with the singer and is the connection.—grantss