S4E36
Beyond the Donatello Nebula
⚠ Spoiler alert This recap gives away what happens in this episode.
Episode Summary & Review
While trying to contact the Turtle Nebula, Donatello meets an intelligent lizard alien named Algernon (“Algae” for short), who must help him and the other Turtles rescue April from a greedy man named Hostile Hiram Grelch.