 A 12-month-old girl presented to the emergency department with projectile bilious vomiting. Laboratory tests revealed low sodium levels, which led to a diagnosis of hyponatremia. However, further investigation revealed a foreign object lodged in her intestine, which was later identified as a water bead. Despite fluid resuscitation, the child's symptoms did not improve, and a CT scan revealed a large foreign object obstructing the small intestine. An emergency laparoscopic procedure was performed to remove the object, and the patient made a full recovery. This article was authored by Nauri Lee, Hyun Beechin, Hyun Joon Jong, and others.