Every year she was throwing a party and everybody would always come, because if they didn't, she'd forget to transfer salaries to their bank accounts.
This is the first year that she threw a party and nobody even showed up. 
mnli hypothesis: This is the first year that she threw a party and nobody even showed up.  premise: Every year she was throwing a party and everybody would always come, because if they didn't, she'd forget to transfer salaries to their bank accounts.