10 years old Jiale escapes to a fantasy world to fulfil his longing for his lost mother. His father, also struggling with the loss, awkwardly tries to play a more maternal role but is frustrated with his reclusive son. Jiale’s unusual behavior gets him teased at school and causes him to become even more introverted and distant. His father, confused and desperate, keeps bungling ways to reach out to his son. A confrontation and a clumsy accident suddenly cause the father and son to view each other in a new light and form stronger bond than ever. My Underwear My World is a comic, colorful glimpse into a family finding their way back to each other.

在失去了媽媽之後，家樂一直都只能在頭套著三角褲中才能看見想念已久的媽媽。而他這舉動不但激怒了爸爸，更讓他們父子倆的關係鬧得越來越僵，日漸疏離對方。而這一天，當爸爸因為生氣而剪碎了那三角褲，更讓他們父子陷入了不可收拾的局面....