# Dragon Ball, Vol. 16
## Part I: The Saiyan Threat
- Arrival of the Saiyans
- Raditz's arrival on Earth
- Goku's confrontation with Raditz
- Gohan's introduction to his uncle Raditz
- Formation of the Z Fighters
- Piccolo and Goku's temporary alliance
- Training for the upcoming battle
- Recruitment of Krillin and other allies
- Battle with Raditz
- Goku sacrifices himself to defeat Raditz
- Gohan's hidden power unleashed
- Raditz's defeat and death
## Part II: Preparation for the Saiyan Invasion
- Revelation of the Saiyan Threat
- Learning about Vegeta and Nappa
- Understanding the Saiyan race
- The impending invasion in one year
- Training with Kami and Mr. Popo
- Gohan's training at the Lookout
- Krillin's rigorous training regimen
- Mastering new techniques and abilities
- Bulma's Quest for the Dragon Balls
- Journey to find the Dragon Balls
- Encounters with various enemies
- Importance of the Dragon Balls for reviving Goku
## Part III: The Arrival of Vegeta and Nappa
- Arrival of Vegeta and Nappa
- Destruction and chaos brought by the Saiyans
- Initial skirmishes with the Z Fighters
- Yamcha, Tien, and Chiaotzu's sacrifice
- Battle against Nappa
- Piccolo's strategic planning
- Gohan and Krillin's teamwork
- Nappa's overwhelming power
- Vegeta's Entry into the Battle
- Vegeta's superior strength and arrogance
- Gohan's transformation and courage
- Krillin's desperate measures to defeat Nappa
## Part IV: The Aftermath and Future Plans
- Defeat of Nappa
- Vegeta kills Nappa for his failure
- Retreat of Vegeta from Earth
- Planning for future battles
- Revival of Goku
- Using the Dragon Balls to bring back Goku
- Goku's recovery and preparation
- Anticipation of Goku's return to action
- Preparations for the Next Challenge
- Building stronger alliances
- Continued training and growth
- Preparing for the next major threat