- Starts out inside an orchestral concert hall somewhere in Europe (blanking on the country, but the name of the concert hall is shown in a non-English language) showing people walking in, and the orchestra tuning up.
- As the orchestra is tuning up, suddenly a bomb goes off right under the stage, causing most of the orchestra members to fall through.
- Various faceless SWAT-like armed soldiers swarm onto the stage, and shoot dead the remaining orchestra members, along with concert-goers in the audience.
- Other armed soldiers are shown driving up to the concert hall (initially seems like the "cavalry" but it's quickly shown that they're not).
- The soldiers that drove up come through the front doors and are shown putting some type of gas into the vents going to the concert hall, which causes most of the concert audience to get knocked out.
- A few of the armed soldiers inside the concert hall exchange gunfire between each other, showing that some of these are "good guys" while others are "bad guys", or at least on different sides.
- One of the extra well-dressed audience members in the concert box seats seems to be a pivotal character, as he's shown held up by an unknown guy with a gun.
- One of the armed soldiers throws another bomb into the mezzanine as the remaining soldiers run out of the concert hall.
- As two of the last guys emerge outside the concert hall, the bomb thrown into the mezzanine blows up, causing a decent explosion that's visible from outside.
- Montage edit of various scenes, including Pattinson's character inside a car (might be the same scene already shown in the first trailer).
- "TENET" title shown to an explosive musical stinger.