Playboy songwriter Brad Allen's succession of romances annoys his neighbor, interior designer Jan Morrow, who shares a telephone party line with him and hears all his breezy routines. After Jan unsuccessfully lodges a complaint against him, Brad sets about to seduce her in the guise of a sincere and upstanding Texas rancher. When mutual friend Jonathan discovers that his best friend is moving in on the girl he desires, however, sparks fly.

Two teen stories in one movie. "Dear Partyline" tells the story of Badong who falls in love with a girl in a Coke commercial who happens to be the other half of their telephone party line. "Dear Killer" tells the story of Lenny and the mysterious disappearance of a girl who was considered the school's best Soprano singer.