In the second part of the Extranjeros series, Sam receives an unexpected phone call which sets him on a new path in his quest to uncover his past and learn his true identity.

Should he meet the mysterious caller in Toledo's ominous Gothic cathedral after dark? Will the caller reveal who Sam is and how he came to be in Toledo? Or will the sinister gang boss, Alvaro, be lying in wait for him?

When his new friends, Yuki and Joanna, agree to accompany him, they set out on a nighttime adventure that will take them into the bowels of the medieval city and confront the dark forces that are gathering against them.

Along the way, Sam gradually discovers more about his own character but starts to wonder which of his new friends he can trust.