Carter, April and the Turtles investigate a break-in at the Antique Timepiece Museum. Convinced that Dregg is responsible, but not sure why, the Turtles discover a clue on a wall display of two rows of clocks. Above the top row are the letters ""LT,"" and above the bottom row are the letters ""LL"". Donatello deduces that they are ""Longitude"" and ""Latitude"" and, after adding up the numbers on the clocks and checking a map, he announced the location - the NorthWest Steel Mill.
The heroes decide to investigate to see if it is one of Dregg's traps. But it is not Dregg, instead they find a costume character named CHRONOS - Master of Time and King of the Clocktower. Chronos escapes but threatens the Turtles that he is planning on committing two crimes and challenges them to stop him.
Something about this guy seems familiar, so the Turtles separate into two teams to prevent both of Chronos crimes. April sets out to learn his identity.
Back at the lair, the Intruder Alarm sounds and Splinter unex