It's 1919, and Herschel Greenbaum (Seth Rogen) is a struggling but upbeat laborer who immigrates to America determined to build a bright future for his beloved, growing family. One day, while working at his factory job, Herschel falls into a vat of pickles... where he's trapped for 100 years. Luckily, the brine preserves him perfectly, and when he emerges in present-day Brooklyn, he finds that he hasn't aged a day. When Herschel connects with his only surviving relative, his great-grandson Ben (also played by Rogen), an easygoing app developer, the pair's attempts to bridge their 100-year gap lead them to reconsider the true meaning of family - and the value of a really good pickle.