From their facebook post:
OLDTOWN White Coffee City Square outlet is having an exclusive 1-for-1 weekday happy lunch from 11:00am to 2:00pm. Gather your friends to enjoy this great deal!
More food choices available in the outlet
The picture shows Nasi Lemak with Turmeric Fried Chicken Leg or Curry Mee, but it sounds like there are more options in store. You can mix and match as the lower priced item is free. The offer is not available on public holidays.