Andy is a writer for newspaper classifieds who has been bouncing from relationship-to-relationship since sixth grade. Throughout the film, he loses custody of his dog when his girlfriend, Cheryl, breaks up with him for another man. Andy then meets Lorna, a children's TV show host, but she is too obsessed with her own dog to commit to a relationship with Andy. She's also still smiting because her boyfriend Trevor, left her for Andy's ex, Cheryl.
　　Andy also has a fling with another woman, Keiran. Meanwhile, Cheryl takes Andy's dog to a psychiatrist, who tells her that her promiscuity is traumatizing the dog.

　　杰克羅林斯博士，攜同兩名助手進(jìn)行野外的考察，卻遭遇到莫名其妙的火山爆發(fā)，地質(zhì)災(zāi)害出現(xiàn)在美國各處。這些災(zāi)難的出現(xiàn)，與美國當(dāng)局的一個(gè)秘密任務(wù)“DEEP計(jì)劃”有關(guān)。于是，一場牽涉到自然科學(xué)研究，國家能源開發(fā)與個(gè)人私欲的斗爭，陸續(xù)上演了。