Logline
An accident while investigating a time portal sends Ensigns Beckett Mariner and Bradward Boimler through time from the 24th century, and Captain Pike and his crew must get them back where they belong before they can alter the timeline.
Written by Kathryn Lyn & Bill Wolkoff
Directed by Jonathan Frakes
That was amazing, on par with Trials and Tribble-ations for a crossover. Loved how well they integrated Boimler and Mariner without losing any of the character as LD has presented them.