A strange girl once came to an elderly teacher and declared that she was her goddaughter Alena. A kind woman recommended her to her friend - and now the girl is working in a large computer company. But suspicions did not leave the teacher: the girl behaved strangely, and the signs did not match - the real Alena had a burn scar on her thigh since childhood. Is she being deceived? But why?.. Those who sent the false goddaughter did not imagine that the teacher would turn for help to her former student - private detective Tatyana Ivanova... Favorite and faithful advisers - magic bones - as well as her own intuition quickly helped Tanya figure it out and understand that Alena the impostor is connected with a gang that is engaged in large-scale robbery of computer companies. But knowledge is one thing. Now the main thing is action...