Buffy bumps into Cordelia, Harmony and Mitch. She knocks over her bag of weapons. Cordelia makes fun of her as the group leaves.

Mitch is changing in the locker room and overhears a laugh. A baseball bat is hovering in the air and attacks Mitch several times.

Cordelia is campaigning to be the May Queen. She taunts Buffy and refuses to campaign for her vote. Buffy reveals to Willow and Xander that she was school queen as well at her old school. She misses it.

After Willow and Xander distract Principal Snyder with a lie about Mitch suing, Buffy sneaks into the locker room. She finds the "floating bat" and a message about "LOOK".

Giles is unsure of what could've caused the bat to attack on its own. Their top theory is the ghost of a dead Sunnydale High student.

A flashback is revealed of someone eavesdropping on Cordelia and Harmony's conversation. They dismiss the unseen girl with a sneer.

Harmony is knocked back by a mysterious force. She falls down the stairs and hurts her ankle. Principal Snyder tells her to not sue.

Buffy follows a mysterious laugh into the music room. Nothing was there.

Two strange men are standing outside of Sunnydale High.

Buffy is positive the force isn't a ghost, but an invisible girl. She patrols the school at night and hears flute music in the band room.

Angels offers to help Giles find a supposedly lost book.

Another flashback is revealed of a girl (Marcie) trying to make conversation with Cordelia, Harmony and their crew in the bathroom. They constantly ignore and dismiss her.

Cordelia wins the title of May Queen.

Buffy finds a secret sleeping area above the band rooml she finds the flute and a yearbook. As she's about to take the yearbook, a knife is floating over her head. Buffy is spared and she leaves.

A blag is flung over Mrs. Miller's head; someone is trying to suffocate her. Cordelia saves her in time. A floating piece of chalk writes "LISTEN" on the board.

The invisible girl is revealed to be Marcie Ross, a girl who had no friends and was completely ignored. And because she was completely ignored, the energies of the hellmouth made the meta-physical a reality.

A flashback is shown of Marcie turning into the invisible girl.

Cordelia asks for Buffy's help; she is sure the mysterious force is after her. No one recognizes Marcie's face in the yearbook. They determine Marcie's goal is to stop her from going to the May Queen celebration at The Bronze.

Willow, Xander and Giles head down into the boiler room when they hear flute music. The setup is a trap; the music is a recorder! Marcie locks them inside as the room starts filing up with gas.

While Cordelia is changing into her gown, Marcie kidnaps her. Buffy goes after her but falls into the band room from overhead. Marcie drugs her as well.

Cordelia and Buffy wake up tied to chairs at The Bronze. A large "LEARN" message is painted over a black curtain.

Marcie has made Cordelia's face numb. She plans to surgically cut up her face and leave Cordelia with a horrific sight she will have for the rest of her life. Buffy frees herself from the chair.

Angel saves Giles, Willow and Xander in time. He goes to shut off the gas while the others go to save Buffy and Cordelia.

Marcie starts attacking Buffy, but Buffy can't retaliate. She asks Cordelia to stay silent so that she can hear her attacker. A sound is made and Buffy hits her.

Marcie is knocked out. The two mysterious men from earlier arrive and they take Marcie away. The two men are from the FBI.

During the next day, Cordelia acts nice to the Scoobies. When Mitch and the popular crew arrive, she dismisses the Scoobies and leaves them.

Marcie has been placed in a classroom with other invisible kids. They're being trained in the art of espionage and assassination.