Jennifer Check (Megan Fox)  is the main character of Jennifer's Body. She is a flag girl on the cheerleading squad in high school. When she attends a rock concert with her best friend Needy Lesnicki, she gets kidnapped and sacrificed by the band in a Satanic ritual. Since Jennifer is not a virgin, a demonic succubus possesses her instead. Now she must sustain her life by seducing boys and feeding on their flesh. However, Jennifer never hurts Needy, which indicates she may feel protective and romantically attracted towards her.

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