Star Trek: Enterprise (2001)

S1E11 Cold Front

Title: Cold Front Plot: The Enterprise encounters an alien ship ferrying stargazers eager to witness an extraordinary cosmic phenomenon. Captain Archer extends an invitation for them to board, unaware that Silik, a Suliban adversary, is hidden among the guests. Soon, Archer discovers Silik's sinister plan involving time travel, prompting him to take immediate action to prevent any alterations to the timeline before it’s too late.