清華附小英語啟蒙動畫，零基礎的寶寶磨耳朵，小學低年級學習 P2 - 2.Pen pencil box bag book

A short red pen dreams of freedom and escapes its small, dark pencil box. However, its excitement leads to an accident where it spills ink on Mike's favorite bag and book. After Mike discovers the mess and the broken pen, the pen apologizes and learns to be well-behaved, ensuring the school supplies stay clean.