The orphan Eliška Irovská, nicknamed Líza, arrives in her native village of Ptačice. As an orphan she is housed in the local poorhouse and has to go out begging. Her guardian Petr Tumlíř, however, sees that she is competent enough to go to school.
A dashing but mysterious man saves a gambler from suicide, crashes the posh party of a prominent industrialist, falls in love with his daughter, and finds himself in a web of intrigue revolving around her blackmailing fiance and a gang of counterfeiters.
Aliens attempt to take over the Earth by taking over the bodies of humans at the moment of their death, and using them as tools for their invasion plans.
A Hungarian squire and his son compete for the favour of an operetta diva; the younger makes the running. - Unplausible mistakes, small intrigues and a lot of love in an old-fashioned musical comedy with proven comedians.