Gus, an abused, talking Raffles’ banded langur, entertains drivers at a Jakarta intersection. Charlie Tan, an auditor, who secretly wants to be a clown, rescues Gus and smuggles him back to Singapore on the last flight before the borders close.
Gus yearns to find his family at Bukit Timah Nature Reserve but at every turn the violent turmoil unleashed by rampaging talking monkeys led by the fearsome Monkey King obstructs his path. Gus and Charlie part ways as the monkey revolution spreads chaos and mayhem across the Singapore. A Filipino nurse, Juliette Salonga, rocked by guilt and grief for the death of her daughter and husband, helps Gus in his quest.
As nature reasserts itself across the island, they search for a home that will accept them for who they are. Gus and Juliette trudge up and down the Rail Corridor to the Monkey Kingdom at Clementi Forest, while Charlie finds survivors taking refuge amongst the heritage shophouses of Blair Plain and higher levels of the Pinnacle@Duxton.
Will Gus find his family — the last Raffles’ banded langurs — at Bukit Timah? Will Charlie get to be a clown or will his past come back to haunt him? Will Juliette find peace? Will people listen when nature talks back?