This report provides a detailed analysis of the 2004 Sumatra earthquake and the resulting tsunami. It begins with an introduction to the event, highlighting its magnitude and geological context, including the subduction of the Indian Oceanic plate below the Burma microplate. The report delves into the geological aspects, discussing faulting, rupture zones, and the resulting tsunami waves. It then explores the devastating impact on people, including death tolls, property damage, and liquefaction. The report further examines the reasons for the massive destruction, emphasizing the lack of warning systems and communication infrastructure. The long-term and global impacts are assessed, including economic, social, and environmental consequences. Finally, the report discusses the likelihood of recurrence and the contribution of the event to scientific understanding, including the development of early warning systems. The report concludes by summarizing the key findings and emphasizing the importance of preparedness and awareness in mitigating the impact of future disasters.