The plot is that Vlad Tepes, a.k.a. Dracula, has set his sights on invading Britain and MI13 have to stop him. It's generally very nicely done with some neat continuity references, a well-balanced set of scripts, some marvellous artwork from Leonard Kirk and a few interesting twists. The only bit that really lets it down is a tedious fake-out midway through.
Aside from that the trade is very strong and pure manna for Marvel UK fans with several interesting cameos thrown in.