A group of misfit high school students stumble upon an ancient Aztec death whistle. They find that when they blow the whistle, the terrifying sound it emits will invoke their future deaths to hunt them down. As the body count rises, the friends investigate the origins of the deadly artifact in a desperate effort to stop the horrifying chain of events that they have set in motion.

A high school football coach struggles with the fallout after one of his players dies onfield during practice.

The Old Grey Whistle Test is an influential BBC2 television music show that ran from 1971 to 1987. It took over the BBC2 late night slot from "Disco Two", which had been running since January 1970, while continuing to feature non-chart music. It was devised by BBC producer Rowan Ayers. According to presenter Bob Harris, the programme derived its name from a Tin Pan Alley phrase from years before. When they got the first pressing of a record they would play it to people they called the old greys—doormen in grey suits. The songs they could remember and whistle, having heard it just once or twice, had passed the old grey whistle test.

Tadateru Matsudaira, the sixth son of Ieyasu Tokugawa, was exiled for not taking part in the attack on Osaka Castle. 10 years before his exile expired, he was attacked in a clandestine Yagyu operation believed to have been ordered by his older brother Hidetada. In order to correct his brother's true intentions, Tadateru broke the law and went all the way from Hida Province, where he was exiled, to Edo Castle. However, the Yagyu do not stop trying to kill Tadateru...