Miguel Hermoso's Like Lightning offers a fresh take on a familiar scenario, the teenaged boy searching for his unknown father. Pablo is a typical teen, with a fondness for football and sneaking beers with his buddies. He enjoys a comfortable upper-middle class life with his mother (Assumpta Serna), a successful lawyer and former feminist rabble-rouser, but has a gaping hole at the core of his identity: he has no idea who his father is. Preoccupied with the question to the point of obsession, he sets out in search of answers, and finds himself on a trail that leads to the Canary Islands.

Pablo, un chico de diecisiete años, vive en Madrid con su madre, una abogada matrimonialista de cierto éxito. En su época universitaria, en los turbulentos años setenta, fue una feminista radical y una comprometida militante de un partido de extrema izquierda. Su actitud libertaria la llevó a decidir tener a su hijo, al que nunca le habló de su padre. Sin embargo, el deseo de saber quién es su progenitor, se ha convertido para Pablo en una verdadera obsesión.