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.

99's quick and clever reactions save Max from drowning. Back on the ship, Max talks with the captain who offers his assistance after finding out the reason he can never understand his aide. To make matters worse, 44 has finally had it. Not only Max cracks his super secret message, but he's tired of working hidden, not being able to eat at the captain's table, it's a boring job... As if it wasn't bad enough, he gets shot and Max finally discovers who the killer is, though it may be too late for him.