The Samaritan Agenda is a story mission in the video game, "South Park: The Fractured But Whole".
Plot details follow.
Doctor Timothy gives you a call. You need to meet the Freedom Pals at the South Park Senior Center. Here, Tupperware and Wonder Tweek are waiting for you. As you enter, you are ushered onto the stage to put on a performance. Press the button prompts to play your instruments. Unfortunately, no matter what you do, the senior citizens will become enraged. You must fight them in order to leave.
Here, you will need to get each of your characters to reach the indicated area on the other side of the elderly. Only getting one character over there will not be enough. To make things worse, these senior citizens pack quite a punch. One thing to note, you need to get all of your (living) characters to the other side.
If you only have two characters alive and they are both in the safe zone, the fight will finish. Focus on getting two of your characters into the zone while attacking the elderly from behind with the other two. Be sure to stay on the offensive, always moving forward when possible. Achieve victory to receive the Seal of Freedom artifact and the Elder Maw Recipe.
Now head to your next mission, Origins 4: The Omega Prologue.