Dragon Ball Z: TV Box 1 - The Saiyan Conflict

Arrival
The Saiyans have sent their mighty warrior, Raditz, to the Earth to search for his younger brother, and to finish the job his brother neglected - to destroy all traces of human life on this planet!

The Saiyans
Episode #5: Gohan's Metamorphosis - Gohan is left alone to survive for six months, while Piccolo watches over him from afar.
Episode #6: Gohan Makes a Friend - One day, Gohan helps an injured dinosaur and the two become friends.Later, Gohan's new friend is attacked by another evil dinosaur!
Episode #7: Trouble on Arlia - Vegeta and Nappa are getting closer to Earth, eager to gather the seven Dragon Balls and realize their wish for immortality.

Snake Way
Episode #8: Home for Infinite Losers - Goku has fallen into the land of no return.Two ogres promise that they will show him the way back to Snake Way if he wins a competition against them.
Episode #9: Princess Snake's Hospitality - A selected group of warriors will undergo the special training that will prepare them for the Saiyans.
Episode #10: Escape from Piccolo - Gohan escapes the wilderness, but when he almost reaches home, Piccolo reminds him of his mission: to save Earth!

Pendulum Room
Episode #11: Showdown in the Past - Krillin, Tien, Chiaotzu and Yamcha, are training at Kami's lookout, but get frustrated at the speed of their training.
Episode #12: The End of Snake Way - One night, Gohan suddenly transformsto a giant ape again and attacks Piccolo!
Episode #13: A Fight Against Gravity