The question of whether to choose love or a chance of fulfilling your dreams has been tormenting couples since the beginning of time, and Michael Wong deals with this theme by adding the concept of the promise in this multi awarded short.

In the film, we watch Wang Yuyang, a passionate man, trying to convince Chen Wen, the girl he loves, to be with him. The 90 coins of the title symbolize the ninety days he gives himself to convince the girl to marry him by showing her his true color and prove his intentions. His efforts are successful and the two fall in love. However, as everyday life hits their bubble of love quite hard, Chen Wen also comes across a chance to fulfill her dreams of going to Paris, which come hand in hand with another man, Andre. The ending of the film gives a definite answer to the question mentioned in the prologue.