Dragon Ball: Ossu! Kaettekita Son Gokuu to Nakama-tachi!!
English name: Dragon Ball: Yo! The Return of Son-Goku and Friends!!
Genres: Action, Adventure, Comedy, Fantasy
Type: Special, Episodes: 1
Aired: Sep 21, 2008
Studio: Toei Animation
Source: Manga
Rating: PG-13 - Teens 13 or older
Synopsis:
Based on an original concept by the original author Akira Toriyama, the story, set shortly after the defeat of Majin Buu, pits Son Gokuu and his friends against a new, powerful enemy.

This special introduces four new characters: Abo and Kado red and blue aliens wearing battle fatigues similar to Frieza's army, one tiny yellow alien, and a young Saiyan child who vaguely resembles Vegeta named Tarble. Though very little about the plot has been revealed, Tarble has arrived on Earth, being pursued by Abo and Kado.

(Source: Wikipedia)