The variety of activities and techniques suggested for improving the writing skill shows that EFL/ESL learners need scaffolding to gain mastery over it. The present study employed the reader-response approach to provide the assistance EFL learners require for writing argumentative essays. Five upper-intermediate EFL learners in a private class participated in the qualitative case study. The participants were not selected from the fields related to the English language and did not have any previous instruction on literary texts. During the treatment that took 20 sessions, each session 2 h, the participants read five short stories. Different classroom activities were used as sources of information, which helped the researcher to collect the required data. The classroom activities consisted of group discussions, writing tasks, and responses to the short stories that helped the learners to reflect on the short stories. Think-aloud protocols helped the researcher to learn about the participants' mental processes during writing. The semi-structured interviews provided the researcher with the information necessary for a deeper understanding of the efficacy of the classroom procedure. As the results of the study showed, successful writing requires manipulation of meta-cognitive strategies and thought-provoking activities. Although the findings of the study cannot be generalized, they can inspire EFL/ESL teachers and material developers to seek a variety of procedures in their approaches to teaching writing.