The Turtles are vacationing in the Alps, as Splinter goes off to a nearby mountain to meditate. April is in an Alpine village with Irma when she notices the ice and snow melting, unusual for this time of year.

Two snobbish art-collecting aliens arrive in Florence and begin stealing great works of art, while the Turtles and April are there. The citizens blame the Turtles for the theft, and after being defeated in their efforts to stop the aliens, the TMNT must escape an angry mob.