Tales of the Teenage Mutant Ninja Turtles returns to Nickeloden this Sunday with a one-hour episode, and CBR has the first look at a scene from "When Worlds Collide" -- with Leonardo (Seth Green), Donatello (Rob Paulsen), April (Mae Whitman) and Karai (Kelly Hu) facing Newtralizer (Danny Trejo), now boasting, as Donatello puts it, "electricity-based power."

"When Worlds Collide" is the first new episode of Tales of the Teenage Mutant Ninja Turtles since April, and marks the beginning of the season's second story arc. Here's the official description of the episode:

The Newtralizer returns to New York City more powerful than ever before and joins forces with a dangerous, yet unexpected ally. With the help of Mona Lisa, the highly skilled Salamandrian warrior played by returning guest star Zelda Williams (The Legend of Korra), the Turtles fight back to defend their city.

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Tales of the Teenage Mutant Ninja Turtles is the official title for the fifth season of the current Teenage Mutant Ninja Turtles cartoon, which started in 2012. Earlier this year, Nickeloden confirmed that it would also be the final season of the show, to make room for an upcoming 2D animated series titled Rise of the Teenage Mutant Ninja Turtles.

"When Worlds Collide," the latest episode of Tales of the Teenage Mutant Ninja Turtles, airs 9 a.m. on Sunday, June 18.