Four high school friends, the B-Faces, reunite for Becky's marriage to her sweetheart, Dale, and for this reason, Regan, Gena, and Katie plan to throw a bachelorette party for the first in the gang who settles down. In other words, they are determined to party hard and have a blast, just like prom night for grown-ups. After six months of careful planning, the excited bridesmaids are now ready to set New York on fire; however, disaster strikes when the girls accidentally ruin Becky's wedding dress, triggering a series of desperate attempts to make things right while the clock is ticking. Now, as the B-Faces roam the streets of the bustling metropolis, only an epically brilliant plan can save the day. But, will they make it in time?