It’s your basic don’t-give-up-on-your-dreams story, in Spanish.  Santiago dreams of becoming a performer, but at the audition for the school play he freezes.  When he confesses to his dad that he didn’t get the part, dad tells him not to give up on his dreams, so he keeps practicing on his own time, which makes him ready to jump in and save the day when the lead in the play is suddenly ill.  It’s fine.  It’s a good little story, with a good message. Just perhaps a bit of a cliche.