Shy and studious Ariadna sets her sights on winning the affection of her longtime school crush before high school graduation. Feeling inexperienced in matters of courtship, she approaches his charismatic older brother, Emilio, requesting lessons in charm and self-assurance. Emilio agrees to a temporary arrangement of pretend dating to boost her romantic confidence, but their practice dates quickly generate unexpected emotional sparks. As lighthearted lessons turn into undeniable attraction, Ariadna finds her careful plans completely scrambled. Caught in an unexpected emotional dilemma, she must decide whether to continue pursuing the unattainable fantasy boy she idolized or embrace the passionate, genuine connection developing with the brother who surprised her heart.