Four pages from WONDER WOMAN 6...
Now that Zeus has gone missing, both Poseidon and Hades want to take his place.
The proposal is that Poseidon and Hades, instead of beating the crap out of each other to decide who succeeds Zeus, like the two originally planned, share the throne by entering into a three-way bigamous marriage with Hera.
Hera, understandably, shows up to express her displeasure at the idea.
She teleports to Mt. Olympus, where she uses the candle to destroy Hera's scrying pool. Hera, being on Earth, can't return quickly enough to stop her. Which was the plan all along.
Hades is pretty pissed off at being played, but Poseidon just finds the whole thing amusing.