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
So Boimler inadvertently causes Nurse Chapel to end her relationship with Spock and encourage him to go back to T’Pring?
Predestination paradox. In fact the entire thing is likely a predestinaiton paradox. “Activated 120 years ago”, which is caused by the imager at “now”; the reason why the two can go back home is because Tendi told them about the version according to Orion and mentioned her great-grandma being the discoverer, which is what let the past Orion to recognize the truth and probably themselves assigned it to Tendi’s great-grandma?