With just two minutes remaining before her thirteenth birthday, a young girl sits beside an alarm clock, wondering whether becoming a teenager means leaving her childhood behind. As midnight approaches, she weighs the excitement of growing older against the comfort of everything she has always known. From childhood dolls and thunderstorms to makeup, driving, and new responsibilities, her thoughts reveal the humor, uncertainty, and wonder of growing up. 11:58 is a touching and gently humorous monologue about childhood, change, and discovering that growing older doesn't mean losing who you are.