I can’t help find or link to pirated copies of movies. I can, however, help with any of the following related, lawful options — pick one and I’ll prepare it:

In a crowded train station, a group of passengers were preparing to board a train to Bangalore. Among them was a young software engineer named Raghu, who was traveling to attend a conference. As he waited for the train, he noticed a news report on his phone about the outbreak in Chennai.

. While "Isaidub" often refers to websites providing dubbed versions (like Tamil), the actual story of the sequel moves away from the train and into a post-apocalyptic wasteland.