Buttercup decides to navigate her chaotic family life and social anxieties by joining the school glee club and documenting her experiences for an online therapist. Buttercup faces a series of personal hurdles, including a dysfunctional home environment, a dramatic best friend, and the absence of her father. To cope with these pressures, she adopts a self-deprecating approach to life, throwing herself into the high-energy, often embarrassing world of glee club performances. The narrative is presented through a diary-style framework, allowing the protagonist to process her daily frustrations and social blunders with a candid, humorous tone. She must balance her desire for belonging with the reality of her unpredictable personal circumstances.

Readers frequently highlight the protagonist's distinct voice as the primary draw of the narrative. Discussion often centers on the balance between the comedic elements of the glee club antics and the more serious undertones of Buttercup's family life. Critics note that the diary format effectively captures the frantic energy of the teenage experience without becoming overly sentimental. The pacing is described as brisk, mirroring the chaotic nature of the protagonist's daily life and internal monologue. Many readers appreciate how the book addresses common adolescent insecurities through a lens of absurdity and wit.