What is Jennifer's Body about?

Jennifer's Body is a 2009 black comedy and horror film written by Diablo Cody. The film is directed by Karyn Kusama and stars Megan Fox, Amanda Seyfried, Adam Brody and Johnny Simmons. Fox portrays Jennifer Check, a newly possessed teenage serial killer specializing in "offing" her male classmates as best friend "Needy" Lesnicki, portrayed by Seyfried, strives to stop her. Here's the plot:
Insecure bookworm Anita "Needy" Lesnicki (Amanda Seyfried) and arrogant, popular flag girl Jennifer Check (Megan Fox) have been best friends "since the sandbox" and wear matching heart-shaped lockets engraved with the initials BFF to signify this bond, although they share little in common. One night, Jennifer insists Needy come to a local dive bar to attend a concert by indie rock band Low Shoulder, where Jennifer soon develops a crush on their lead singer, Nikolai Wolf (Adam Brody). While flirting with Jennifer, Nikolai concludes that she is a virgin. As the band begins to perform one of their songs, a suspicious fire engulfs the bar.

this band wants to be nown so they try help from the devil they have 2 sacrafice a virgin turns out they sacrafice jennifer and shes not a virgin so the devil starts contrlling her body and eating on flesh if it doesnt feed jennifer stars gettin ugly ,looking like crap when her bff finds out she has to kill her