This is attrakttv, for now at least (naming things is hard).

It's a complete overhaul of trakt.jemu.name , and while not feature complete yet, it's at least a lot faster and less terrible.

You can look up TV show data from trakt.tv and get data and plots for seasons and episodes.

The source is available on GitHub

How do you even stuff?

Select a show from the dropdown menu, or look up a new one by, well, entering a new thing.