Zill, a high school student, looks forward to stepping into adulthood and leaving his indifferent and restrictive family. A manslaughter case completely changes his life trajectory, which is the starting point of his true coming-of-age journey as well as the turning point of his estranged relationship with his mother. Zill goes through great expectation towards adulthood and dilemma in disappointment and pain, and then becomes stuck in confusion and disillusionment. His maturity symbolizes his loss of innocence.