Ep. 4: Piccolo perfects the Special Beam Cannon while Goku defends for five minutes against Raditz
Aired on May 17, 1989

Goku and Piccolo face a difficult situation as Raditz effortlessly blocks their attacks. Piccolo has developed a new technique called the Special Beam Cannon that might defeat the Saiyan. However, charging this attack requires time. Goku must survive alone against Raditz for five minutes to allow Piccolo to complete the energy gathering process. This strategy relies entirely on Goku's ability to endure the enemy's assault without support until the final strike can be launched.
Episodes
- Ep. 1 · A new sinister alien threat approaches Earth while Goku enjoys a quiet life with his family.
- Ep. 2 · Goku and Gohan attend a reunion on Master Roshi's island where an unexpected visitor arrives
- Ep. 3 · Goku forms an unexpected alliance to save Gohan from Raditz's demands
- Ep. 4 · Piccolo perfects the Special Beam Cannon while Goku defends for five minutes against Raditz
- Ep. 5 · Gohan's Fury Awakens as Goku Suffers Raditz's Assault
- Ep. 6 · Z Warriors Prepare for Saiyan Arrival While Goku Trains With King Kai
- Ep. 7 · Gohan Faces Survival Challenges and Dinosaurs on His First Training Day
- Ep. 8 · Krillin Receives Urgent Training Message While Gohan Undergoes Shocking Transformation