Summary of "First time playing Minecraft in mobile with my sister 😱🥵"

The video follows a 100-day challenge in Minecraft where the goal is to kill the Ender Dragon. The player is joined by their sister, Jagar, who struggles to keep up with the tasks. They gather resources, build tools, and try to survive the night while facing challenges like zombies and an Iron Golem. The player guides their sister through the game, offering advice and support. Eventually, they find a village and celebrate their progress. Throughout the video, there are moments of humor and tension as they navigate the game together.