A cross over devised by One Piece author, Eiichiro Oda, and Dragon Ball Z author, Akira Toriyama.
The cross over is one chapter long and displays the characters living in a world together.
One character from each series is teamed up with their 'counterpart' from the other.
Luffy and Goku (the strongest/lead)
Zoro and Piccilo (the badasses)
Nami and Bulma (the 'babes')
Sanji and Roshi (the perverts)
then Vegeta is a lord with Robin, Usopp, and Trunks as his loyal crew
It's quite amusing and very fun