Trigger is the story of a friendship between two women. Victoria “Vic” Sawchyn and Kathryn “Kat” Lake are friends from childhood who started a neighbourhood band together — sort of like the Go–Go's meet Patti Smith with a little Siouxsie and the Banshees thrown in. Sticking to their rock ‘n' roll dream, they continued to trade up bands until they began to have real success with a hit single and a European tour. On the tour, things went to hell and, due to egos and drugs and rock ‘n’ roll, the band imploded as did the friendship. Now it's 10 years later and a local record label is having a benefit concert to honor women in rock; Vic and Kat are expected to attend. They meet for dinner and it is clear that, although there is a desire to make amends, it's unclear to each of the women who really needs to apologize. As we travel with them on a trip to the concert and a late night after–party, their stories are revealed and the true nature of their friendship is discovered.