Grace has never been to a wedding before, let alone board a plane by herself and fly to a city 3,396 kilometres away. When her cousin Cecilia sends a wedding invitation from Perth, Grace begins an adventure she has never experienced before. With the support and guidance from Cecilia, she finally becomes friends with the boy (a famous Youtuber, singer and actor) who lives next door to her cousin. But as their relationship develops and becomes stronger, what will happen when the wedding is over and Grace must return home? When Grace realises that there are now two very important people in her life, what will influence her decision and change her future? Could a simple decision made by the boy next door influence and change the future of three people?