The movie begins with a flashback to Nobita's childhood, depicting his long-standing crush on his friend Shizuka. In the present day, Shizuka and Nobita are finally getting married, fulfilling Nobita's lifelong dream. However, on the day of their wedding, Nobita is nowhere to be found. Understandably distraught, Shizuka begins to doubt whether Nobita truly loves her.
Doraemon, witnessing this heartbreaking scene, decides to intervene and help Nobita make it to the wedding on time. Together, they embark on a time-traveling adventure through Nobita's past, present, and future, facing new challenges and meeting familiar faces along the way.
Throughout their journey, Doraemon and Nobita discover the true meaning of love, friendship, and family, culminating in an emotional reunion between Nobita and Shizuka. The movie explores themes of regret, loyalty, and second chances, presenting a heartwarming message about the power of love and the importance of cherishing those closest to us.
