This is basically a Dragon Ball/DBZ trivia quiz show.
It's really nostalgic for those who just want to look back on the good 'ol DB days.
HOWEVER... THE SHOW IS RIGGED.
One of the questions is:
Krillin: "Who was Jackie Chun really?"
B. Master Roshi
D. He really was Jackie Chun
Now under Dragon Ball logic, of the Z fighters, only Tien, maybe Chiaotzu, are aware of Jackie Chun's real identity as Master Roshi. Therefore, since Krillin asked this question, the answer should be D, he really was Jackie Chun. Instead, Krillin specifically says the answer is B and that Jackie Chun is Master Roshi in disguise. If recalled
correctly, during the 22nd World Martial Arts Tournament, Yamcha initially suspects that JC is Roshi. However, Roshi fools them into thinking that JC is Roshi's cousin. Additionally, later in the series, Roshi looses his glasses during a fight and Krillin remarks that Roshi reminds him of someone else when not wearing his glasses. However, this thought is quickly shot down by Roshi and Krillin is unable to make a conclusion.
After noticing this inconsistency, my enjoyment of this OVA drastically decreased as I only half payed attention to the rest of it. But to be honest, it was mostly just reminiscing moments->random question->reminiscing moments->random question->etc. Watch if you want some DB/DBZ nostalgia.