Dysgerminoma is the most common malignant germ cell tumour of the ovary. Abdominal pain, abdominal distention, and the presence of a palpable mass are common symptoms at presentation. This is usually detected in youth, before the age of 20 years. Ovarian or adnexal tumours are very rare in patients below the age of 18 years, most of them being functional cysts, only 10% being malignant. Here is a rare case of an 8 years old girl with dysgerminoma who underwent right-sided salpingo-oophorectomy for unilateral involvement with conservation of fertility and now the patient is on chemotherapy as the tumour metastasized to the pre-aortic lymph node.