Polly Shang Kwan, perhaps the most beautiful of all the Asian female action stars of the 1970s (yes, above even Angela Mao), stars in this action-packed contemporary revenge tale, and gets into a kung fu scrap roughly every 5 minutes! (Just ignore the fact that nobody in this movie, including the gangsters, even thinks of using a gun until very late). Her father was killed because he had a certain diamond in his possession, but before he died he passed it on to one of his friends. So now Polly is looking for the diamond AND her father's killers. Luckily for her, she has badass fighter and nightclub singer (!) Yasuaki Kurata to assist her. The action is rather crude, but plentiful, and the film culminates with one of the LONGEST mixed fights ever, starting on foot in the middle of the night and then (through some careless, to say the least, continuity) continuing in broad daylight with a bike vs. car chase, then a boat vs. larger boat chase, and finishing on foot again, in a completely different location, on land, in the water, everywhere! You certainly can't accuse "Seven To One" of being lazy; it works hard to give you what you came for. **1/2 out of 4.