It’s S45.

A woman with long red hair and ornate gold jewelry looks on with a concerned expression in a snowy, outdoor setting. The scene cuts to a woman in a black, embellished dress and a silver mask, crouching on a table covered in greenery, surrounded by a crowd of people in masks and costumes at a dimly lit, opulent indoor gathering. The sequence continues with a man and a woman in elaborate costumes dancing closely in a grand, ornate room. The final shot shows a group of figures in dark cloaks and masks, one with a red face mask, standing together in a dimly lit, patterned interior.