Torn between three lovers and bored by her typewriting classes, Carolina (Dillian) writes a passionate love letter to fictional Pablo Garza from Monterrey. The letter is sent by mistake and received by real Pablo Garza's girlfriend. Pablo himself (Infante) flies to Mexico City looking for an explanation. Carolina is rehearsing a musical show for her school dressed as a man. When Pablo meets her, she pretends to be her brother Anibal, a shy and feminine sailor. Pablo likes Anibal and invites "him" to a cabaret. After that, Carolina falls inlove with Pablo but resists to unveil her real self. Meanwhile, Pablo feels himself confused, because young "Anibal" is cute as an angel and has "those blue eyes..."
| Actor | Role |
|---|---|
 Pedro InfantePablo Garza | Pablo Garza |
 Irasema DiliánCarolina Cirol | Carolina Cirol |
 Alejandro CiangherottiNot listed | Not listed |
| EEduardo AlcarazNot listed | Not listed |
 Miguel Ángel Ferriz Sr.Not listed | Not listed |
 Fanny SchillerNot listed | Not listed |
 Arturo Soto RangelNot listed | Not listed |
 Josefina LeinerNot listed | Not listed |
 Kika MeyerNot listed | Not listed |
| YYolanda OrtizNot listed | Not listed |
| CConstanza HoolNot listed | Not listed |
| CChela NájeraNot listed | Not listed |
| LLupe LegorretaNot listed | Not listed |
 Nicolás RodríguezNot listed | Not listed |
 Salvador QuirozNot listed | Not listed |
 Marcela DavilandNot listed | Not listed |
| AAlicia MissionerNot listed | Not listed |
 Enrique ZambranoNot listed | Not listed |
| LLorenzo de RodasNot listed | Not listed |
 Federico CurielNot listed | Not listed |