Ring of Fire

(Synopsis credited to Ninjaturtles.com) The Turtles are in Lisbon, Portugal, enjoying the sights. Krang sends Shredder and the mutants there to set up a special lens that will focus the sun's rays to create a devastating heat ray. The Turtles rescue April and Irma from Shredder, Vernon gets mixed up in a bull fight, and finally destroy the lens just as it's about to wreck the city.