The Amazing Mr Blunden (2021)

The ordinary lives of teenagers Jamie and Lucy take an exciting turn when they meet the mysterious Mr. Blunden. Hired as caretakers for a supposedly haunted house, they discover two ghostly children, Sara and Georgie, who have traveled from the past seeking help. Convinced of a sinister plot, the teens join Mr. Blunden on a time-traveling adventure to rescue their ghostly friends, correct history, and thwart evil intentions.