Lando does what every smooth talking charismatic con-artist does, goes on "the last big heist to pay off old debts and become rich." 
 It a well constructed and it nice to read a self contained story. Taking place before we meet Lando in the movies, he goes through significant character development that explain how he became the man we know. 
 It also continues an mysterious new element regarding the Force which I think is going to play a bigger role in future of the cannon.