Livingston advanced to the final of the William Hill Premiership play-offs with a convincing 4-0 total win over Partick Thistle.
With a 2-0 lead from the first leg, David Martindale’s team's progression was almost certain after Jamie Brandon scored five minutes before the break.
Stevie May’s impressive half-volley in the second half ended any chance of a Jags comeback.
The Lions will now play against the team second from bottom in the Premiership.
Their opponents will be decided on Sunday, with Ross County, currently in the play-off position, and Dundee fighting to avoid a tense end to the season.
Thistle had an early opportunity after Scott Pittman fouled Ben Stanway on the edge of the box.
Steven Lawless took the free-kick but missed the target.
While Livi had more possession, Thistle had better chances.
Logan Chalmers sent a cross just above Aidan Fitzpatrick's head, and Stanway's shot was deflected wide after hitting Danny Wilson.
Livi had their first shot on goal in the 23rd minute when Wilson's header went just over.
Both goalkeepers were finally tested after a quiet start. Lewis Smith's shot was saved by Thistle's David Mitchell, and Jerome Prior caught Brian Graham's attempt.
The opening goal came in the 40th minute, as Livi extended their lead.
Livi captain Brandon outplayed Stuart Bannigan, moved forward, and scored with an angled shot despite the efforts of the Jags keeper.
At halftime, David Martindale substituted Brandon and Robbie Muirhead to avoid suspensions.
Thistle faced a tough task, but they attacked strongly early in the second half.
Kanayo Megwa's cross narrowly missed, and Stanway forced a save from Prior.
The game was settled in the 67th minute when May converted Pittman's pass with an excellent half-volley.
It was a disappointing night for Thistle player-manager Graham as his free-kick hit the side-netting.
Thistle fought hard to make the play-offs and overturn a deficit in the quarter-finals against Ayr, but reaching the final proved too difficult.