3-bunui 1-i Eopseodo

"If we're still single by thirty, let's just get married!" It was nothing more than a lighthearted promise made between childhood friends back in middle school. Years drift by, and the milestone finally arrives. Yeon-Hwa is on the verge of marrying her long-term college boyfriend when she is blindsided by his sudden decision to end their relationship. Devastated and wandering the streets in a daze, she steps into the path of an oncoming car. When she opens her eyes again, everything has changed. The accident has erased the last ten years of her memories, leaving her mentally stranded in the past. To her absolute bewilderment, the person standing by her hospital bed as her legal guardian is none other than that very same childhood friend. As the fog of amnesia begins to lift, she realizes the playful vow they made as kids somehow became reality during the decade she can no longer recall. Confronted with a life she does not remember living and a husband she only recalls as a middle school companion, Yeon-Hwa must navigate this bewildering new marriage and piece together the lost years that brought them together.