Riddler and Joker are murdering the citizens of Gotham, destroying the city, in an all out war to see who gets the right to kill the Bat.
To choose how to tip the fight, Bruce Wayne invites them over, and offers them financial aid to the one who can convince him why they're the one who should kill the Bat. He's trying to gauge which one is more dangerous, since this is a story set in earlier times, so he doesn't know them as well as he does now.
The only way to win this fight, you see, is to actually have one win. He'll throw in as both Bruce Wayne and Batman to back the less dangerous man and win, then I'm assuming, take down the winner.
It's an interesting idea, and seeing them all sit down and be civil for a full nine courses was fascinating - but I don't completely buy that this is the best way to do this. Superman and Wonder Woman don't care that this is happening? No heroes do?
There's no one Bruce can reach out to? The government, someone?
And me not completely buying this being the best solution is why this is four stars instead of five. It's an interlude to the fighting certainly, but it's tense, it tells a lot about the characters, and it's ramping things up in it's own way. Just not with fists or guns.
Looking forward to the next issue.