Why does it have a count down timer on ur screen at peakvox?
Each week for 24 hours, they open up the left MP for a special mission. They give you somekind of specific goal or restriction each week and gives out bonuses in coins or EXP to the winning team or MVP, and sometimes deducts coins or EXP for the losing team. Go look at the right side board in the lounge for the specifics.
This weekend it's all basic weapons + super speed and triple jumps. Purchased weapons will not work here, so you'll have to be a little more resourceful. Personally I dislike this event because it's very hard to shoot people dashing all over the map at that speed. Your best options for getting kills are to find a sword and hit them with thrusts, use a hand cannon to slow them down, or collect chikuwa and use ninjutsu at close range.