Private investigator Richter Raymond suspects that his best friend, Evan Pardo, has gone missing. As he investigates the potential disappearance, he begins to fall down a rabbit hole of the strange and unnatural, leading him to a certain off-the-grid, seaside village. The peculiar town has a local superstition that every year, just before the summer solstice, the town experiences an extra day which nobody remembers the next. Richter must confront his beliefs, insecurities, and prejudices as he ventures into the eerie and macabre Maine coast to not only find and rescue Evan, but to also uncover the mysteries of what exactly the Phantom Days of Odtown are.