It has been two years since Alex and Amanda ended up in the same family and became bonus siblings. Biweekly they live together. To Alex's great dissapointment the plans for the summer changes when Amanda's grandfather dies.
Speech-day. Alex' and Amanda's parents are fighting about the plans for the summer. In the evening both Alex and Amanda goes to a party and strong emotions bubbles up to the surface.
The summer has started and Alex and Amanda are on their way out to the countryside. Alex hates it, but when he and Amanda meets 16 year old Niko and his friends, everything changes.
Midsummer Eve derails when Alex's father Lars are bringing his new girlfriend. Niko gives a gift to Amanda.
There is a bad atmosphere between Kristina and Peter. Alex and Niko are beginning to be good friends, but is it really Alex Niko is intrested in?
Niko comes with excuses when he and Alex are going to meet, and Amanda is lying about where she is.
Peter and Kristina forces Alex and Amanda to take care of their little sister Line. Alex and Julia are trying to get to know why Niko and Amanda lies about where they are.
It's Amanda's birthday, but will anyone show up at the party after the truth has been revealed? Julia and Alex have a plan.
Amanda and Alex are going to babysit Line, but Amanda sneaks out to meet Niko and leaves Alex and Line alone. Suddenly, Line is gone.
Peter and Kristina wents home to the city to figure things out. They are leaving Alex and Amanda alone in the cabin with Line over the night.
Amanda, Julia, Alex and Niko are going to camp in the forest. It retrails and during the night no one knows who is with whom anymore.
The summer is over and Alex' and Amanda's lives changes radically when they are returning home to the city. Nothing is like before.