A horde of KAOS agents are taking flights to Washington. Each one carries a piece of a bomb which is meant to explode near an American base. Max and the Chief capture one of KAOS's agents and fool-force confidential information out of him. They end up in Blue Mist Mountain and it's up to 86 to dismantle the bomb before it goes off. All the help he has is Parker on the shoe-phone, a coin, and a very expensive tie.

Max and the Chief disguise themselves as concert critics as they go in the aid of Hubert, a violin virtuoso who has been working undercover to find the identity of KAOS's Big Boss. Just before Hubert is able to give his report he is killed but first hides a clue in the form of writen music. Max must then stop pianist Wolenska from being killed by a bomb planted in the piano on which he will perform Hubert's last symphony, a desperate attempt of the Big Boss to keep his identity secret.