Complex sentence: After SpongeBob takes back the Flying Dutchman's ship from the robots, the Flying Dutchman, who promised a golden spatula for him if he gets his ship back, goes back on his deal in which Sandy fights him for it.
Split into simpler sentences: After SpongeBob takes back the Flying Dutchman's ship from the robots. The Flying Dutchman, who promised a golden spatula for him if he gets his ship back, goes back on his deal in which Sandy fights him for it.