Killing Grimace would not happen on this day, in this house.

The Mets have been an example of resilience this year, whether it was rallying 11 games under .500 in June or receiving a ninth-inning home run from Pete Alonso in Milwaukee to advance in the NL Wild Card Series, ending this season with a whimper on Friday — without so much as a win at home in the NLCS — wouldn’t have fit the script.

Cold bats thawed and weary relievers collected enough outs to boost the Mets charter for a flight back to Southern California after a 12-6 victory over the Dodgers in Game 5 of the NLCS before 43,841 at Citi Field.

The Mets, who are down 3-2 in the series, will rest Sean Manaea for five days to start Game 6 Sunday in Los Angeles. The Dodgers have not yet announced their pitching plans.

Alonso was among the Mets’ offensive heroes on the day with an early three-run homer, but the entire lineup got involved against Jack Flaherty and the Dodgers’ bullpen. Starling Marte went 4-for-5 with three RBIs as part of the team’s 14-hit attack.

The Mets had combined to score just nine runs through the first four games of the series, but surpassed that mark with Friday’s blowout.

Edwin Diaz recorded the final six outs scoreless after the Mets got a strong relief outing from Ryne Stanek, who allowed just one run in 2 ¹/₃ innings.

Alonso’s three-run homer in the first inning got the engine rolling. The stunner was Alonso’s fourth of the postseason and first in the NLCS. Francisco Lindor singled to lead off against Flaherty and Brandon Nimmo walked before Alonso jumped on a slider and drove over the fence in right-center.

Enrique Hernandez raced home on David Peterson’s wild pitch in the second inning to put the Dodgers up 3-1.

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Peterson had escaped trouble the previous inning by hitting three straight outs without scoring a run after Marte misplayed Mookie Betts’ line drive into a double, giving the Dodgers runners on second and third without anyone was out.

The Mets took control in the third, as they plated nine batters and scored five runs. Marte hit a two-run double after Alonso and Jesse Winker walked consecutively to start the inning.

Francisco Alvarez hit an RBI single with two outs that extended the Mets’ lead to 6-1. Before the inning ended, Lindor tripled in a run and Nimmo singled in another run, burying the Dodgers in an 8-1 hole.

Andy Pages homered with two outs in the fourth and Peterson loaded the bases before Reed Garrett came in and threw a sweeper for a called third strike off Freddie Freeman to end the inning.

In his first start this postseason – after four relief appearances – Peterson lasted 3 ²/₃ innings and allowed two earned runs on six hits with four walks and three strikeouts.

The Mets went back to work in the bottom of the fourth: Winker hit an RBI triple and Jeff McNeil drove in the 10th run of the game with a sacrifice fly. Alonso started the inning with a plunk.

Pages’ second home run of the game, a two-run shot against Garrett in the fifth, brought the Dodgers within 10-5. It was the last batter Garrett faced, as manager Carlos Mendoza signaled to the bullpen for Stanek.

Betts homered in the sixth inning against Stanek to bring the Dodgers within 10-6. The blast was the second in as many games for Betts. But Stanek wasn’t touched for the rest of his outing.

McNeil’s second sacrifice fly of the game brought in Winker, extending the Mets lead to 11-6 in the seventh. Winker went down in the inning and doubled to Marte’s third base.

Marte’s RBI single in the eighth gave the Mets their 12th run.