A young boy named Mason navigates the complexities of childhood against the backdrop of a fluctuating family life. Living in Texas with his older sister Samantha and their single mother Olivia, Mason's life is marked by frequent relocations and the occasional stability offered by his absentee father, Mason Sr. As Mason grows, he observes and absorbs the dynamics within his family—his mother's struggles with relationships and education, and his father's attempts to stay involved while charting his own path. The story meticulously captures moments of everyday life, from sibling rivalry to new schools, all while hinting at the overarching quest for identity and belonging.

As Mason enters adolescence, the film transitions through pivotal moments that shape his teenage years. Olivia's pursuit of education and personal growth creates turmoil yet provides a semblance of order, while Mason Sr.'s sporadic but meaningful presence offers different perspectives on life choices and responsibilities. Each year brings new challenges and lessons, fostering Mason's evolving understanding of love, pain, and growth. The narrative traces the subtle yet significant changes in Mason's character, reflecting the journey of becoming—from innocence to self-awareness, all framed by the ordinary yet transformative passage of time.