Prime Timeline
   | Year | Event | 
   | 2369 | 
         ● [1]
         Commander Riker is captured whilst on a covert mission to Tilonus Four. Although interrogated with a form of memory manipulation, he is able to escape and return to the Enterprise-D. [1]
      
 | 
   | 2370 | 
       ● [1]
         Lieutenant Worf's brother Nikolai Rozhenko violates the Prime Directive in order to save a tribe of Boraalans when their home planet becomes uninhabitable. Although reluctant, the Enterprise-D crew assist him in relocating the tribe to another planet. [2] | 
   
Colour key
● - Shows the canon status and reference of the year for this event
References