The big, big heart at the center of the TV movie cycle “Lotta’s Life” belongs to Lotta (Josefine Preuss, “Hotel Adlon”), impetuous and charismatic, loud-mouthed yet attentive. Now in her 20s, she knows she’s finally got to do something with her life. And so she decides to help others: as a nurse in a home for senior citizens. Her many adventures there prompt her to study medicine, but things take an unexpected turn when she gets pregnant from a party acquaintance... Fate then takes its course.