"Ang Kapatid Kong Buntis" (translated as "My Pregnant Sister") is an animation that centers around the story of a young woman named Mia, whose life is turned upside down when her sister, Elena, unexpectedly becomes pregnant.

The plot begins with Mia, a responsible and hardworking individual, who is suddenly faced with the challenges of supporting her sister through an unplanned and complicated pregnancy. Elena's pregnancy brings a mix of joy and anxiety to the family, and Mia finds herself taking on additional responsibilities to ensure that her sister receives the care and support she needs.

As the pregnancy progresses, Mia navigates various emotional and practical challenges, including dealing with societal judgments, financial strains, and the strain on family relationships. The animation explores Mia's struggles as she balances her own life while being a pillar of support for Elena.

Throughout the story, themes of family solidarity, personal sacrifice, and the complexities of navigating unexpected life changes are highlighted. The animation blends drama with heartfelt moments, showcasing the strength of familial bonds and the impact of supporting loved ones during difficult times.