The male protagonist returns to the crucial senior year of high school, suddenly waking up to bid farewell to wastefulness, studying diligently and determined to make a counterattack. With his calm wisdom, he improves his straitened family financial situation, filializes his hardships-enduring mother, patiently escorts his younger sister's growth, and proactively shoulders heavy family responsibilities. Facing life, he is down-to-earth and sincere to others, joins hands with partners for cooperation with vision and insight, helps and unites classmates to resolve conflicts, and writes a youth inspirational chapter full of responsibility, warmth, and struggling power.