Je suis Karl: An explosion sends fear and terror through Berlin. Young Maxi's home is reduced to rubble and ashes, burying her mother and little brothers. Only she and her father survive the terrorist bomb attack. When she happens to meet the charismatic Karl, who tells her about a conference for young people in Prague, she seizes the opportunity to flee Berlin and her grieving father. The political movement behind the meeting claims to be working for a better Europe. Maxi has no idea how close the murderers really are to her family.