Screen 1 – After Namek (One Year Later)
Frieza was nearly killed by Goku and Sonic on Namek.
King Cold, Frieza's father, finds him floating in space and has him rebuilt with cybernetic parts, turning him into Mecha Frieza. Frieza is furious about losing to a Saiyan and Hedgehog and to Sonic and Goku.
Now, he plans his revenge. He wants to destroy Earth, since that's where Goku, Sonic, and the other Z Fighters live.
King Cold tags along, partly to support his son, partly out of curiosity to see the Saiyan and the Hedgehog who defeated Frieza.
Screen 2 – Arrival on Earth
Frieza and King Cold arrive on Earth, just like in the original story. Their plan is to kill everyone before Goku and Sonic can return from Yardrat. The fight begins immediately.
Screen 3 – Trunks and Silver
Trunks appears, as in the original story, but he has a new friend: Silver the Hedgehog.
Using psychokinesis, Silver assists Trunks in battle. Trunks uses his sword, and together they manage to defeat both Frieza and King Cold easily.
Screen 4 – Goku and Sonic Return
Goku and Sonic use Instant Transmission to travel back to Earth. They meet Trunks and Silver.
Goku is shocked, just like in the original story, and Sonic is surprised to see another hedgehog.
Silver introduces himself: "Hi, I'm Silver the Hedgehog. Nice to meet you."
Trunks replies, "You must be Sonic, right?"
Sonic nods, "Yes, that's me."
Screen 5 – Warning About the Androids
Trunks and Silver warn them that Android #17, Android #18, and Metal Sonic are extremely powerful.
In Trunks' future timeline, these Androids appear three years later and cause massive destruction. In that timeline, Goku and Sonic die from a heart virus before the Androids even arrive.
This isn't a fight—it's an illness.
That's why Trunks warns the Z Fighters: without Goku and Sonic, the Androids and Metal Sonic are too strong to stop.
Trunks gives medicine to Sonic and Goku and emphasizes that the future can still be changed if the Z Fighters act now.
He stresses the need to train, prepare, and be ready before the Androids arrive
"The Androids are coming. They're too strong. Many of you will die if you don't prepare. I came from the future to stop this."