The Sleepers (2019)

S1E21 A Fright at the Opera

During their trip to the Milan Opera House, Duckula, Nanny, and Igor encounter the enigmatic phantom. To their surprise, the phantom's aide is actually an old friend from Igor's school days. Tension escalates when the phantom abducts Nanny. In their attempt to save her, chaos ensues, leading to the opera house's destruction. Ultimately, the phantom escapes to America, where he plans to terrorize the Grand Ole Opry.