Dragon Ball Z: Plan to Eradicate the Saiyans

With 72 hours before a poison gas wipes out every living thing on the planet, this two-episode OVA hits the ground running — and it moves fast enough that the short runtime actually works in its favor. Dr. Raichi is the last survivor of the Tsufurujin race — a civilization the Saiyans wiped out long before the series began — and he's built machines that pump Destron Gas into the atmosphere as a very deliberate act of revenge against Goku, Vegeta, and anyone unfortunate enough to share a planet with them. Goku, Gohan, Piccolo, Vegeta, and Future Trunks all get in on the scramble to find and destroy these machines before time runs out. What makes it interesting beyond the ticking clock is the Tsufurujin lore itself — it quietly adds texture to Saiyan history in a way the main series rarely stops to explore. The villains are genuinely menacing too, with some familiar faces showing up in unsettling new forms. If you liked the straightforward villain-of-the-movie energy from Dragon Ball Z: The Tree of Might or Dragon Ball Z: The World's Strongest, this sits comfortably in that same space. Think of it as a lean, self-contained DBZ story with a slightly darker premise than usual — no padding, just setup and confrontation. Good for a Friday night when you want something that doesn't ask much of you.