The movie, focusing on romance and remembrance, is the first Basque-language entry to represent Spain, according to The Hollywood Reporter.
Directed by Jon Garano and Jose Maria Goenaga, the story revolves around a woman named Ane, who mysteriously receives flowers regularly.
After her secret admirer is suddenly killed in a car accident, she gets to know his identity, and when she begins to leave flowers at the site of his death once a week, the man's widow and mother discover there was more to him.
88th Academy Awards will take place on February 28, 2016, at the Dolby Theatre in Hollywood, Los Angeles.