When Hipolit Pinyol, convinced atheist, dies in an unfortunate accident, discovers that Buddhism is the only religion right about spirituality: if you want to achieve nirvana, you must subject to the laws of reincarnation. In the beginning, the process to get there did not seem very complicated, but a series of unfortunate and hilarious reincarnations made him understand it was going to take a lot of time.
Nice book for teens. It was recommended by my niece who loved it.