Just like it sounds, Gorr vs the Twins, in character. The twins travel in time to a planet in the same solar system as Gorr's a month before Avengers Thor and Old Thor show up. Gorr feels their arrival somehow and assumes they're gods come to stop him and meets them on their planet. Each side expects that they can win as they are so they haven't prepared in any way. All the twins know about Gorr (since he knows nothing of them) is that he likes to kill gods.