The film "1992" is set in 1992 Los Angeles amidst the turmoil following the Rodney King verdict, where Mercer (Tyrese Gibson) tries to rebuild his life and relationship with his son as tensions rise. Meanwhile, Riggin Bigby (Scott Eastwood) and his son Dennis (Dylan Arnold) plan a perilous heist at Mercer's workplace, which intersects with Mercer's story. Ray Liotta plays Lowell, a character whose true role is not specified in the provided text.