The story centers on a "misunderstanding-to-reality" arc where Dal-mi believes Do-san is her childhood pen pal (who was actually Ji-pyeong writing under Do-san's name). As they enter Sandbox to launch their startup, they face cutthroat competition, technical hurdles, and a complex love triangle. Where to Watch
The drama is set in , a fictionalized version of Silicon Valley located on Nodeul Island in Seoul. It focuses on the personal and professional growth of several key characters: Seutateueob
: The complete 16-episode series is available for streaming. It focuses on the personal and professional growth
1-2 of 2. Sort by Date. Date. Duration. Trailer 0:30. Seutateueob (English Sub) Start-Up (2020) 2. Trailer 0:33. Official Trailer. Start-Up (TV Series 2020) Date. Duration. Trailer 0:30.
(Kim Seon-ho): A sharp-tongued investor at SH Venture Capital with a secret past connection to Dal-mi.
(Nam Joo-hyuk): A struggling math genius and founder of Samsan Tech who becomes Dal-mi's business partner.