This the third Exceptional Story of Groover's that I've played, and I definitely liked this one more than most Exceptional Stories.
In this one, you become entangled in a slug race which, due to the nature of slugs, takes over a month to finish. In the meantime, you must travel all over London to interfere with the race, investigate the mysterious woman behind the race who always plays tango music, and look into the backgrounds of the competitors.
The game was quite a bit longer than I expected, with an extended opening, three phases of the race with two different activities in each phase, and a long and moving finale.
The rewards were good, the lore about hell and the Carnelian coast was good, and the slugs were excellent. Also, I enjoyed having an option to 'Fight the lettuce'. Definitely recommend this one.