Meet up with Alvin in the Fennmont Inn and Vera will inform you of a new fractured dimension, so head off to Fractured Dimension F4235.

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After arriving in Nia Khera the group will spot Alvin and Presa walking through town, with Presa’s ring showing signs of being the divergence catalyst.

Alvin heads off to lure Presa away from the group, but considering the fact that this is the past and that the ring was likely a gift from Alvin you should probably assume that this isn’t going to go to end well.