This video begins as a sweet, captivating ode to high school love—and then it gets very, very real. I’m hesitant to call what happens at the end a “twist,” because nothing about the scenario ought to be construed as a lighthearted game. Watch the whole thing.

The video, created by the ad firm BBDO New York on behalf of Sandy Hook Promise, is intended to to educate viewers on the importance of awareness.

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“When you don’t know what to look for, or can’t recognize what you are seeing, it can be easy to miss warning signs or dismiss them as unimportant. That can lead to tragic consequences,” Nicole Hockley, co-founder and managing director of Sandy Hook Promise, told Adweek.

“It is important for us to show youth and adults that they are not helpless in protecting their community from gun violence—these acts are preventable when you know the signs. Everyone has the power to intervene and get help. These actions can save lives.”