Thirty years ago, Sean's (Pierre Png) brother, Sam, went missing. He worked his way up in the Special Investigation Section of the Singapore police force, and managed to gain access into old case files. Convinced his brother is somewhere in Bangkok, and armed with only a foggy childhood memory of a birthmark, Sean spends his days shuttling between Singapore and Bangkok profiling vagrants and beggars, in the vain hope of reuniting with his long-lost brother.Sean encounters Lynn (Rebecca Lim), a jaded self-serving tour leader and Aut (Pae), a high-flying hot-shot Thai Inspector, on one such trip. Their paths collided and what started out as one man's search for his brother quickly turns into a dangerous foray into the underbelly of an international human trafficking syndicate, and they discover that fate has more in store for them than they could ever imagined.