Mladi dirigent Andres prejme posnetek, v katerem mu njegovo dekle Belen pove, da ga zapušča. Prizadeti Andres se kmalu zatem zaplete s Fabiano, žensko, ki jo sreča v baru. Ko se izkaže, da je Belen izginila, policija sumi, da je v njeno izginotje vpleten prav Andres, toda resnica je drugačna. Belen, ki je bila ljubosumna na eno izmed violinistk v Andresovem orkestru, se je odločila skriti v skrivni sobi v njuni hiši, da bi prek njegovega odziva na njeno izginotje preverila, če jo Andres resnično ljubi. Zaplete se, ko Belen odkrije, da je izgubila ključ, s katerim bi lahko odklenila sobo, v kateri je zdaj zaklenjena.
Adrián, an aspiring and talented orchestra conductor, receives a video message from his beloved Belén, telling him with tears in her eyes that she is leaving him and that she cannot carry on with him. Shattered by the unexpected news and puzzles by the inexplicable decision, Adrián gets help from the local Police to solve this case of disappearance. Time passes by and still no news of Belén's whereabouts, so life gradually begins to return to its normal pace, when out of the blue, a new woman appears in Adrián's life. With no progress at all in Belén's case and all things possible, no one will be able to see beyond the facts and comprehend the truth that often lies hidden in the most unusual of places...
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