
Someday or One Day
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A woman discovers a photo from 1998 that changes her life, sending her back in time to relive memories and confront the past.
Yu-Hsuan lost her boyfriend Chuan-Sheng in plane accident. She then discovered Chuan-Sheng and a girl look alike Yu-Hsuan both appeared in a photo taken in 1998. Accidentally, she had backed to 1998 and met a boy looked alike Chuan-Sheng.
Editorial mood guide by WatchMoodly Editorial Team · Base catalog metadata via TMDB.
9.0/10 avg · 56 ratings
Mood Rationale & Viewing Guide: Should You Watch Someday or One Day?
Within our mood classification system, Someday or One Day aligns strongest with a romantic / thriller / happy viewing mood (love stories that will make your heart flutter). Key tonal signals include dark romance, revenge thriller, underrated gem, slow burn, strong female lead, time travel, making it a strong pick when you want a story driven by those themes without spoilers.
Watch If…
- •You want a mystery, sci-fi & fantasy, drama tv series released in 2019.
- •You enjoy themes centered on dark romance, revenge thriller, underrated gem, slow burn.
- •You want a self-contained story that matches your current mood.
Skip If…
- •You are looking for a purely lighthearted, zero-stress comfort watch without dark or tense themes.
- •You only watch completed stories and prefer not to wait for upcoming episodes.
Official Trailer

Official Streaming Platforms
Frequently Asked Questions About Someday or One Day
Where can I watch Someday or One Day (2019) legally online?
Someday or One Day is available through official platforms including Disney+. Use the streaming links on this page to open the licensed release directly.
What mood and genres does Someday or One Day fit best?
Someday or One Day is classified under Mystery, Sci-Fi & Fantasy, Drama and best matches a romantic or thriller or happy mood, featuring elements of dark romance, revenge thriller, underrated gem, slow burn, strong female lead.
How many episodes does Someday or One Day have?
Someday or One Day (2019) is currently marked as ongoing.
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