Lion, a Level 4 Reader, is A2+ in the CEFR framework. The text is made up of sentences with up to three clauses, introducing more complex uses of present perfect simple, passives, phrasal verbs and simple relative clauses. It is well supported by illustrations, which appear regularly.

Five-year-old Saroo gets on the wrong train in India and is taken thousands of miles to the city of Kolkata. After months of living on the streets, he is adopted by a family in Australia. Many years later, Saroo decides to try and find his Indian family.