Submerged

As Henry Sachs fights for his life in a hospital, his son Perry embarks on a crucial quest to uncover the hidden truths of his father's past, which may be linked to a secret underground base constructed by unknown builders. Despite a year of minimal findings, Perry learns that a drastic measure was taken to protect against the site's mysterious creators: a dam was built, flooding the area. Time is running out for Henry, and Perry must confront his deepest fears to uncover what really threatens his father's life before it’s too late.