Varsity A came out with all guns blazing in the second spell to beat Southern 35-27 and book a spot against Taieri in the Dunedin club rugby final next Saturday.
Taieri won their match 20-3 by strangling last year's champions, Dunedin, out of the game.
Both matches were played at the University Oval.
The teams will meet in the final at Forsyth Barr Stadium at 2.30 pm next Saturday.
Photos Caswell Images