It starts out with a lil 'yo, we have to discreetly evacuate you from Batuu thx for your help but the First Order knows the Resistance is here so we've gotta skedaddle' message from Rey (and BB-8 who was explaining everything before letting her message thru, but nobody speaks astromech)
AND OMFG THE SHINY BLACK FLOORS, THE LITERAL SQUAD OF STORMTROOPERS (MOVING V. DISCREETLY, LIL HEAD MOVEMENTS) AND ALL THE CAST MEMBERS IN F.O. UNIFORMS??? IT'S SO GOOD
your shuttle of resistance supporters (y'know, park guests) gets separated by halves and then broken down into color-coded groups, bestie and I accidentally drew attention to ourselves arguing over whether we were white or gray
so then we all get shuffled off to get interrogated by Kylo who then gets called to the bridge as an emergency AND THE RESISTANCE CUTS A FRICKIN' WALL OPEN TO RESCUE US
packs us into troop transport carts (Finn had infiltrated the Star Destroyer at some point, I know it was mentioned but hell if I remember) and the droids driving the carts are supposed to get us to an escape pod WHILE THE DESTROYER IS IN AN ACTIVE FIREFIGHT
you get shot at a bunch (and those effects are super neato) and driven all around an exploding Star Destroyer and finally dropped out via escape pod and back to the Resistance base where the cast Resistance members are glad you survived bc they thought you were goners for sure etc. etc. etc.
(logically the star destroyer is underground and the escape via troop cart winds you back up to ground level again, but I don't actually know and I don't want to either, it's fuckin' magic)
castResistance members are glad you survived bc they thought you were goners for sure etc. etc. etc.