Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worst Cybermen story ever

Returning to Nerva Beacon from Skaro (in 'Genesis of the Daleks') to rejoin the TARDIS, the Doctor, Sarah and Harry arrive some 1000 years earlier than when they left. Nerva Beacon is still in its original function, a space beacon advising approaching ships of a new asteroid, Voga, that is not reordered on all star charts.But all is not well: a mysterious plague is striking down the crew and the exographer who is surveying Voga is acting suspiciously. And lurking out in space are the Cybermen...The first appearance of the Cybermen in 7 years, and sadly a very poor story. In the broad, the story sounds fine, but (as the saying goes) the devil is in the detail. Poor motivation, the most emotional non-emotional cyborgs, and an unlikely method of disposing of them add up to make this story quite dreadful.How bad is it? It was another 7 years before the Cybermen returned...