Ridge warns Steffy that he doesn't want her ruining things tonight for Hope at the party. When Steffy finds out that everyone will be wearing masks she comes up with an idea. Rick and Thomas promise Hope that they won't let Steffy ruin her party. Brooke tells Ridge that she will save a dance for him at the party. Oliver ends up accidentally dancing with Brooke when Marcus tells him where he thinks Hope is. When Oliver leaves with Brooke, Marcus realizes something is up. Aggie and Nick continue to get to know one another better. When Oliver comes back into the house he runs into Hope and then sees the person he was making out with was Brooke after she takes her mask off.