When her dementia-stricken grandmother Babi dies, 15-year-old Lucy -sensitive and sentimental, with a punky haircut and ears full of piercings- is left reeling and unmoored. That is, until a secret diary locked away in a hidden compartment drops out from Babi's desk. What follows is a living epistolary, reflecting grandmother and granddaughter's struggles with belonging. Babi, caught between her Polish-Jewish past and Mexican home, both of them reckoning with lesbian identity and the need to conceal it. Lucy comes to find in a life they shared far more than a birthday. In a style that perfectly captures tenderness and heartache, painter and animator Santiago Cohen crafts a moving reflection on love, grief, and connection across generations.