Made for love, not money, by an upstart filmmaker who knows and adores his subject, "Groove" is an enthusiastic, insider snapshot of the sweaty, adrenaline-driven, hyper-party atmosphere of San Francisco's red-hot rave scene.

Capturing the boundlessly euphoric spirit of this kinetic musical subculture, this Sundance buzz bin picture is a biography of one rave -- from the guerilla location scouting in empty warehouses to the mood of Ecstasy-fueled pulse electronica that becomes more and more exhilarating with each changing of the guard on the DJs' turn tables.

Writer-director-editor Greg Harrison has a little trouble maintaining the needed verve because he invites the audience into the rave experience through a handful of rather uninvolving characters with elementary story arcs. David (Hamish Linklater) is a high-strung rave virgin, dragged to the party by his live-for-pleasure brother, Colin (Denny Kirkwood). Harmony (Mackenzie Firgens) is Colin's girlfriend, to whom he proposes before making a huge romantic mistake under the influence of Ecstasy. Layla (charismatic Lola Glaudini, "NYPD Blue") is a aimless-but-intelligent beauty who inexplicably nurses David the wet blanket through his paranoid and blissful first time dropping E. They're a shallow and sometimes grave bunch, and far less fun-loving than your average raver.

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