[2][3] Madhavan Thampi and Prabhavati are presented as middle-aged, well-off parents of two sons.
Ammu is advised by her roommates to befriend Aniyankuttan, to gain the trust and love of his family members, before she could propose to Vishnu.
But Aniyankuttan mistakes her interest in him for romantic advances and tells his brother about his secret lover from college.
Vishnu gives his word to Kalyani, to support her love for Aniyankuttan, who was jealous of Ammu's intimacy with him.
He is delighted to have a bike and forces Ammu to ride it with him through the college verandah, much to her and Kalyani's discomfort.
This enrages him, and is worsened when his mother serves Vishnu payasam in a crystal glass, while Aniyankuttan gets a common cup.
Aniyankuttan thinks he is the old man's son and in desperation tries to kill Vishnu by placing drops of oil on the stairs.
However, his mother slips on the oil, falls, and is taken to hospital, where Aniyankuttan tries to poison Vishnu but again fails.
Ridden with guilt Aniyankuttan goes in search of Vishnu and witnesses the car exploding in a ball of fire and cries in despair for the loss of his brother and once best friend.