Once in a Summer
Once in a Summer streams in the US on Amazon Prime Video and Hoopla, and free with ads on The Roku Channel and 3 more apps, as of October 5, 2026.
10 days are forever.
An assistant to a TV producer, eager to stay off his bad side, promises to convince her former professor, a famous but reclusive academic, to appear on their show, which helps locate long-lost persons. Who does grey-haired Professor Yun Suk-young want to see again more than anything? The answer to that question lies decades in the past.
Where to watch
9 apps, one package.
This title is not on an app included with Spectrum, but Spectrum Stream TV Signature includes HBO Max, the Disney+ and Hulu bundle, Peacock, Paramount+ and more. Spectrum Internet is required and sold separately.
What if half your apps were already included?
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Amazon Prime Video
Amazon Prime Video with Ads
Hoopla
The Roku Channel
Rakuten Viki
Amazon Prime Video Free with Ads
Tubi TV
Amazon Video
