Jack and Jill sa Diamond Hills

Welcome to Diamond Hills. After a failed encounter with the notorious Alyas Sexbomb, Rich Bartolome and Mau Cabigting were tasked to go undercover to finally catch the criminal. The two will pose as Jack and Jill Corporal, a sweet couple wanting to start a new life together. But completing the mission will be hard because the two hate each other.

The investigation continues. Jack and Jill's first suspect is the handyman, Bobby G. He knows the ins and outs of the village and he's been somewhat aloof to the couple ever since their arrival. But as soon as the partners realize that they are following the wrong person, Jack notices he lost something that can eventually reveal their secret to everyone.

There's a thief on the loose targeting groceries and deliveries. Unfortunately, Jack and Jill will be caught red handed, holding grocery bags after trying to apprehend the culprit. The crime will be pinned on them until they can deliver the real thief to Cleo. After they've been cleared, they discover that Bobby G already knows their secret.

Jack and Jill tell Bobby G the truth. Surprisingly, the handyman promises to help them in their case. A scheduled black out forces Jack and Jill to spend their time playing games with Harry and Sally. As the lights go back, things between Jack and Jill become clear too. The two are now on the road to becoming friends. While Cleo discovers something her dead husband left behind.

Old issues arise as Jill and Jolie confront their mothers because of how they've been treating them. New faces visit the village. One is Tasya, Jill's talkative mother who loves gambling and pointing out her imperfections. Second is Asiong, Cleo's godson who seem to be the image of a perfect son in her eyes. By the end, Jack and Jill zeroes into Jenny Mae as they make her the new suspect.

Jolie proposes a village-wide video shoot to promote Diamond Hills. Everyone is included. Jack uses the shoot to investigate Jenny Mae, unfortunately, the other residents think he's cheating on Jill. But his focus transfers to Jill as he sees her in a different light for the first time. And before Jack and Jill clear Jenny Mae's name, she is seen talking to a person wearing a hoodie.

Rumors are swirling about Jack and Jenny Mae's supposed affair. And as Jenny Mae confronts Jack as to what his true feelings are, Jack confirms he may be falling for her. But the truth is, Jack is using this to get closer to the suspect. Only problem is, while Jack is risking his reputation to get information from Jenny Mae, Asiong visits again and distracts Jill.

Jill tells Jack she doesn't want anything fancy for her birthday. But Jack is surprised the next day when Asiong arrives and brings with him a full catering set-up. A battle ensues between Jack and Asiong, over party games. Ultimately, Jack wins for securing something that is dear to Jill's heart. After drinking the night away, Jack and Jill find themselves together in bed the next day.

Jack and Jill attend Cleo's husband's Babang Luksa to investigate using the new information they got from their chief. But as usual, things get in the way. The two are having a hard time remembering what really happened between them after Jill's party. Cleo finds a note from an unknown source and the next day, she discovers that someone tried to enter her husband's second unit.

Jack and Jill investigate Cleo's case. In the process, they discover a secret that Bobby G has been keeping for a long time. Bobby G shares to Jack his checklist on how to know if you really love a person. One by one, Jack experiences all three. He may be falling for Jill already.

Jack and Jill battles two-time champions Harry and Sally in the 12th Mr. and Mrs. Diamond Hills to end their bickering over Harry's stolen medicine kit. Jack and Jill win, regains the Torres' friendship but angers Maritess in the process of finding out who she is. The two also discovers they tested positive for Happy P.

Effects of Happy P. is now very visible inside Diamond Hills as Jack and Jill find a way to acquire important information from Maritess. Cleo and Jolie enjoys the fruits of their new business only to find out that it is connected to Happy P all along.

Cleo and Jolie were released from jail after it was discovered that the true Alyas Sexbomb were Tibs and Asiong all along. Jack and Jill plan an entrapment operation and finally wins the case. But before the two leave the village, Jill gets kidnapped.