Quick recap
The travelers reach the machine planet M2, home of Dr. Myuu, who created Baby, a parasite from the Tuffle race the Saiyans wiped out. Baby escapes, goes to Earth and takes over Vegeta's body, controlling almost the entire population with eggs that infect people. He defeats Goku, who has lost his tail and can no longer become an ape. Restored with King Kai's help, Goku turns into a giant golden ape and then a Super Saiyan 4. Baby, as a giant ape, loses the fight and is thrown into the sun. But the Black Star Dragon Balls exact their price: Earth explodes. Piccolo stays behind to die with the planet, and Namek's Dragon Balls restore it later.
No spoilersOpens once you mark the title as seen.