As young children, Otto and Ana become best friends, leading to the marriage of Ana's mother to Otto's father. When Otto and Ana become teenagers, they begin a sexual relationship, which they hide from their parents. The two fall deeply in love and seem destined to spend the rest of their lives together. However, their relationship is tested when Otto's mother dies and the two are separated.
| Actor | Role |
|---|---|
 Najwa NimriYoung Ana | Young Ana |
 Fele MartínezYoung Otto | Young Otto |
 Nancho NovoÁlvaro | Álvaro |
 Maru ValdivielsoOlga | Olga |
| SSara ValienteChild Ana | Child Ana |
 Peru MedemChild Otto | Child Otto |
| KKristel DíazTeenage Ana | Teenage Ana |
| VVíctor Hugo OliveiraTeenage Otto | Teenage Otto |
 Beate JensenOtto's Mother | Otto's Mother |
| RRosa MoralesSofía | Sofía |
 Pep MunnéJavier | Javier |
| JJaroslav BielskiÁlvaro Midelman | Álvaro Midelman |
 Joost SiedhoffOtto | Otto |
| PPetri HeinoAki | Aki |
 Outi AlanenMessenger | Messenger |
| MMaría IsasiSaleswoman | Saleswoman |
| ÁÁngela CastillaHomely Pension | Homely Pension |